Relevant bibliographies by topics / Microcavities

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Microcavities'

Author: Grafiati
Published: 4 June 2021
Last updated: 22 February 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Microcavities.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Microcavities"

1

Vahala, Kerry J. "Optical microcavities." Nature 424, no. 6950 (August 2003): 839–46. http://dx.doi.org/10.1038/nature01939.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Xiao, Yun-Feng. "Microcavity-enhanced photoacoustic vibrational spectroscopy of single particles." Journal of the Acoustical Society of America 155, no. 3_Supplement (March 1, 2024): A158. http://dx.doi.org/10.1121/10.0027152.

Full text
Abstract:
Confinement and manipulation of photons using microcavities have triggered intense research interest in both fundamental and applied photonics for more than two decades. Prominent examples are ultrahigh-Q whispering gallery microcavities which confine photons using continuous total internal reflection along a curved and smooth surface. The long photon lifetime, strong field confinement, and in-plane emission characteristics make them promising candidates for enhancing light-matter interactions on a chip. In this talk, I will focus on single-particle photoacoustic vibrational spectroscopy using optical microcavities.
APA, Harvard, Vancouver, ISO, and other styles
3

Samuolienė, N., and E. Šatkovskis. "Reflectivity Modelling of All-Porous-Silicon Distributed Bragg Reflectors and Fabry-Perot Microcavities." Nonlinear Analysis: Modelling and Control 10, no. 1 (January 25, 2005): 83–91. http://dx.doi.org/10.15388/na.2005.10.1.15137.

Full text
Abstract:
Herein, the problem of nanocrystaline silicon laser and its importance in microelectronics are discussed upon. The features of vertical Fabry-Perot microcavities made on the base of porous silicon are described. The responses of the reflectivity of the distributed reflection Bragg mirrors and Fabry-Perot microcavities were found using transfer matrixes method for this purpose. Inherent optical parameters of porous silicon, deposited by electrochemical etch, were used in the calculations. The calculation of the reflectivity of the distributed reflection Bragg mirrors with front active layer of nanostructural porous silicon had been examined. In the second part, the features of Fabry-Perot microcavities on variation of the number of layers of the front or rear mirrors are described. The impact of the thickness of the active nanocrystaline silicon spacer between two distributed reflection Bragg mirrors upon the spectra of optical reflectivity of Fabry-Perot microcavities in the wavelength range of 0.4–0.9 µm had been examined as well. The made conclusions are important for improvement of the thickness of the active porous silicon spacer in front of Bragg mirror and the features of Fabry-Perot microcavities.
APA, Harvard, Vancouver, ISO, and other styles
4

Левин, Г. Г., В. Л. Минаев, К. Н. Миньков, М. М. Ермаков, and А. А. Самойленко. "Исследование внутренней структуры микрорезонаторов методом оптической томографии." Журнал технической физики 126, no. 3 (2019): 305. http://dx.doi.org/10.21883/os.2019.03.47371.148-18.

Full text
Abstract:
AbstractA microscope for studying internal inhomogeneities of the refractive index of optical dielectric microcavities by optical tomography is developed. The influence of these inhomogeneities on the Q factor of optical dielectric microcavities formed by thermal treatment is experimentally studied.
APA, Harvard, Vancouver, ISO, and other styles
5

Yu, Wenqian, Junfeng Gu, Zheng Li, Shilun Ruan, Biaosong Chen, Changyu Shen, Ly James Lee, and Xinyu Wang. "Study on the Influence of Microinjection Molding Processing Parameters on Replication Quality of Polylactic Acid Microneedle Array Product." Polymers 15, no. 5 (February 27, 2023): 1199. http://dx.doi.org/10.3390/polym15051199.

Full text
Abstract:
Biodegradable microneedles with a drug delivery channel have enormous potential for consumers, including use in chronic disease, vaccines, and beauty applications, due to being painless and scarless. This study designed a microinjection mold to fabricate a biodegradable polylactic acid (PLA) in-plane microneedle array product. In order to ensure that the microcavities could be well filled before production, the influences of the processing parameters on the filling fraction were investigated. The results indicated that the PLA microneedle can be filled under fast filling, higher melt temperature, higher mold temperature, and higher packing pressure, although the dimensions of the microcavities were much smaller than the base portion. We also observed that the side microcavities filled better than the central ones under certain processing parameters. However, this does not mean that the side microcavities filled better than the central ones. The central microcavity was filled when the side microcavities were not, under certain conditions in this study. The final filling fraction was determined by the combination of all parameters, according to the analysis of a 16 orthogonal latin hypercube sampling analysis. This analysis also showed the distribution in any two-parameter space as to whether the product was filled entirely or not. Finally, the microneedle array product was fabricated according to the investigation in this study.
APA, Harvard, Vancouver, ISO, and other styles
6

Xu, Guowen. "Whispering-Gallery Mode Lasers: A New Frontier in Micro resonators." Transactions on Computer Science and Intelligent Systems Research 7 (November 25, 2024): 462–67. https://doi.org/10.62051/sycn3t80.

Full text
Abstract:
Whispering Gallery mode (WGM) optical microcavities represent a significant focus in current laser research. Initially, this paper elucidates the concept of WGM and its acoustic significance, before delving into its development in the optical field and its crucial role in optical devices. Subsequently, the author explores the theoretical foundations of WGM, elucidating the photon confinement effect due to total internal reflection. These optical microcavities are noted for their high symmetry and surface smoothness, which confer an exceptionally high Q-factor. The enhanced light-matter interactions in these microcavities lead to substantial improvements in nonlinear optical effects, laser gain, and photonic crystal effects within the amplified optical fields. The author discusses micro resonators, the fabrication methods of microcavities, and the unique nonlinear optical effects arising from high Q-factors and small mode volumes, including Stimulated Brillouin Scattering, Stimulated Raman Scattering, the Kerr effect, and four-wave mixing. These effects hold broad application prospects in fields such as precision spectroscopy, optical communication, and frequency comb generation. The advantages of WGM optical microcavities in laser fabrication and the study of nonlinear optical effects are summarized, with an outlook on their potential applications in future optical fields, such as high-sensitivity sensors and low-threshold lasers.
APA, Harvard, Vancouver, ISO, and other styles
7

Kudashkin, Dmitry V., and Ilya D. Vatnik. "Fabrication of optical WGM microcavities using high-resistance wire." Applied photonics 10, no. 6 (September 25, 2023): 32–42. http://dx.doi.org/10.15593/2411-4375/2023.6.3.

Full text
Abstract:
This paper describes a method for fabricating whispering gallery mode (WGM) optical microcavities based on optical fiber using a nickel-chromium wire. The above method makes it possible to manufacture optical WGM microcavities with high reproducibility and low cost compared to other methods.
APA, Harvard, Vancouver, ISO, and other styles
8

Yang, Chun-Ju, Hai Yan, Naimei Tang, Yi Zou, Yas Al-Hadeethi, Xiaochuan Xu, Hamed Dalir, and Ray T. Chen. "Ultra Sensitivity Silicon-Based Photonic Crystal Microcavity Biosensors for Plasma Protein Detection in Patients with Pancreatic Cancer." Micromachines 11, no. 3 (March 9, 2020): 282. http://dx.doi.org/10.3390/mi11030282.

Full text
Abstract:
Defect-engineered photonic crystal (PC) microcavities were fabricated by UV photolithography and their corresponding sensitivities to biomarkers in patient plasma samples were compared for different resonant microcavity characteristics of quality factor Q and biomarker fill fraction. Three different biomarkers in plasma from pancreatic cancer patients were experimentally detected by conventional L13 defect-engineered microcavities without nanoholes and higher sensitivity L13 PC microcavities with nanoholes. 8.8 femto-molar (0.334 pg/mL) concentration of pancreatic cancer biomarker in patient plasma samples was experimentally detected which are 50 times dilution than ELISA in a PC microcavity with high quality factor and high analyte fill fraction.
APA, Harvard, Vancouver, ISO, and other styles
9

Kraišnik, Milija, Robert Čep, Karel Kouřil, Sebastian Baloš, Aco Antić, and Mladomir Milutinović. "Characterization of Microstructural Damage and Failure Mechanisms in C45E Structural Steel under Compressive Load." Crystals 12, no. 3 (March 19, 2022): 426. http://dx.doi.org/10.3390/cryst12030426.

Full text
Abstract:
In this paper, the microstructural damage evolution of a steel with a ferrite–pearlite microstructure (C45E) was investigated during the process of cold upsetting. The development and the accumulation of microstructural damage were analyzed in different areas of samples that were deformed at different strain levels. The scanning electron microscopy (SEM) results showed that various mechanisms of nucleation of microcavities occurred during the upsetting process. In quantitative terms, microcavities were predominantly generated in pearlite colonies due to the fracture of cementite lamellae. In addition, the mechanism of decohesion had a significant influence on the development of a macroscopic crack, since a high level of microcracks, especially at higher degrees of deformation, was observed at the ferrite/pearlite or ferrite/ferrite interfaces. It was found that the distribution of microcavities along the equatorial plane of the sample was not uniform, as the density of microcavities increased with increasing strain level. The influence of stress state, i.e., stress triaxiality, on the nucleation and distribution of microcracks, was also analyzed.
APA, Harvard, Vancouver, ISO, and other styles
10

Granizo, Evelyn, Pavel Samokhvalov, and Igor Nabiev. "Functionalized Optical Microcavities for Sensing Applications." Nanomaterials 15, no. 3 (January 27, 2025): 206. https://doi.org/10.3390/nano15030206.

Full text
Abstract:
Functionalized optical microcavities constitute an emerging highly sensitive and highly selective sensing technology. By combining optical microcavities with novel materials, microcavity sensors offer exceptional precision, unlocking considerable potential for medical diagnostics, physical and chemical analyses, and environmental monitoring. The high capabilities of functionalized microcavities enable subwavelength light detection and manipulation, facilitating the precise detection of analytes. Furthermore, recent advancements in miniaturization have paved the way for their integration into portable platforms. For leveraging the potential of microcavity sensors, it is crucial to address challenges related to the need for increasing cost-effectiveness, enhancing selectivity and sensitivity, enabling real-time measurements, and improving fabrication techniques. New strategies include the use of advanced materials, the optimization of signal processing, hybrid design approaches, and the employment of artificial intelligence. This review outlines the key strategies toward enhancing the performance of optical microcavities, highlights their broad applicability across various fields, and discusses the challenges that should be overcome to unlock their full potential.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Microcavities"

1

Trupke, Michael. "Microcavities for atom chips." Thesis, Imperial College London, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491114.

Full text
Abstract:
This thesis describes the development and implementation of fibre-coupled, micron-scale optical resonators for the detection and manipulation of neutral atoms. The resonators are intended for integration with atom chips. The latter are microfabricated devices which enable the cooling, trapping, gUiding and manipulation of atoms by means of optical, magnetic and electric fields. The fields are generated in part using micro-fabricated features on the surface of the chips. Optical cavities are among the most important tools in the study of the interactions between light and matter. They allow the observation of fundamental processes in quantum optics, based on the enhanced coupling of atomic transitions to light fields. Our resonators have mode volumes which are two orders of magnitude smaller than those used in typical cavity quantum electrodynamics experiments. Together with their high quality factors, this leads to large enhancement factors, rendering them ideal for the detection and manipulation of atoms on chips. They are scalable and directly fibre-coupled, both of which are qualities of interest for their implementation in quantum information-processing applications. In the thesis, the optical characteristics of the resonators are explained, as well as the basic principles of the interaction of atoms with their light field. The setup used for the test implementation of the devices is presented, together with early experimental results. These include the detection of atoms via their effect on the cavity reflection spectrum, and the detection of enhanced atomic fluorescence into the cavity mode. The thesis concludes with an outlook on further experimentation, possible improvements of the devices themselves, and a view on their integration with existing atom chip technology.
APA, Harvard, Vancouver, ISO, and other styles
2

Worthing, Philip Thomas. "Molecular fluorescence from microcavities." Thesis, University of Exeter, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302668.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Christogiannis, Nikolaos. "Organic microcavities and OLEDs." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/16009/.

Full text
Abstract:
The merging fields of photonics and organic electronics into organic optoelectronics has created a surge of enthusiasm over the possibility of developing low-cost and large-area advanced optoelectronic systems. These applications can combine the best functionalities of both fields, such as tailoring the organic semiconductors by chemical means, engineering the structure in which organic materials are embedded in, are to name a few. These advances have stimulated the excitement over the next generation of optoelectronic systems with enhanced capabilities and low-cost manufacturing processes compared to their inorganic counterparts. Such technology direction is mainly reflected by the high investments towards the aim of developing flexible, and roll-to-roll organic light-emitting diodes and organic solar cells. Interestingly, more sophisticated applications require a deeper understanding of the underlying mechanisms at play that merge concepts from the fields of photonics and organic electronics. Particularly, organic light-emitting diodes (OLEDs) under certain constraints (such as cavity light confinement, strong exciton-photon interaction) exhibit modified spectral emission compared to OLED devices that are not bounded by the same conditions. The introduction of the polariton concept as a quasi-particle, which is part-light and part-matter, has emerged to describe such new physical phenomena caused by this photon-exciton intricate interaction. Polariton physics is well established in inorganic semiconductors were a plethora of physical phenomena have been demonstrated, such as the appearance of Bose-Einstein Condensation or low-threshold laser devices. The later is what has as yet to be demonstrated from the field of solid state physics utilising organic semiconductors. This thesis is focused on the study of the physics and the engineering of organic light-emitting diodes that will aid in the realization of efficient organic polariton LEDs. The main body of work examines various organic semiconductor materials in their ability to reach the strong light and matter interaction regime and, subsequently, to be used in OLEDs as the emissive component. Furthermore, a degradation investigation highlights the issues that affect small-molecule based OLEDs, and finally, the possible pathways for achieving efficient polariton OLEDs are discussed.
APA, Harvard, Vancouver, ISO, and other styles
4

Park, Sahnggi. "Optics of semiconductor microcavities." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/289077.

Full text
Abstract:
In this work the interactions of carriers, electrons and holes, and photons in a semiconductor microcavity are studied in the perturbative and the nonperturbative regimes. In the perturbative regime, modification of the spontaneous emission rate of carriers by a semiconductor microcavity is investigated with 100-nm-thick bulk GaAs. Reabsorption makes the cavity-mode photoluminescence (PL) decay much faster than the square of the carrier density. Here reabsorption distortion is avoided by collecting PL that escapes the microcavity directly without multiple reflections using a ZnSe prism glued to the top mirror. Removal of most of the bottom mirror decreases the true carrier decay rate by only ≈25%, showing that the large enhancements deduced from cavity-mode PL are incorrect. A fully quantum mechanical computation including guided modes corroborates this conclusion. The prism technique could be used to study carrier dynamics and competition between guided and cavity modes in microcavities below and near threshold. In the nonperturbative regime, normal mode coupling (NMC) between the quantum-well excitonic susceptibility and photons is studied. In cw linear experiments, the effects of varying cavity finesse and exciton absorption linewidth and line shape and their contributions to the linewidth of NMC peaks are investigated and compared with the experiments. It is shown that all of the observed experimental features can be explained by a linear dispersion theory model that incorporates the experimental excitonic absorption spectrum of the quantum well. Some nonlinear features of NMC obtained from time-resolved measurements are also studied and discussed.
APA, Harvard, Vancouver, ISO, and other styles
5

Berger, Jill Diane 1970. "Physics of semiconductor microcavities." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/289500.

Full text
Abstract:
Semiconductor microcavities have emerged to present abundant opportunities for both device applications and basic quantum optics studies. Here we investigate several aspects of the cw and ultrafast optical response of semiconductor quantum well microcavities. The interaction of a high-finesse semiconductor microcavity mode with a quantum well (QW) exciton leads to normal mode coupling (NMC), where a periodic energy exchange develops between exciton and photon states, appearing as a double peak in the cavity transmission spectrum and a beating in the time resolved signal. The nonlinear saturation of the excitonic NMC leads to a reduction of the modulation depth of the NMC oscillations and corresponding transmission peaks with little change in oscillation period or NMC splitting. This behavior arises from excitonic broadening due to carrier-carrier and polarization scattering without reduction of the oscillator strength. The nonlinear NMC microcavity luminescence exhibits three excitation regimes, from reversible normal mode coupling, through an intermediate double-peaked emission regime, to lasing. The nonlinear PL spectrum is governed by density-dependent changes in both the bare QW emission and in the microcavity transmission. The temporal evolution of the microcavity emission is analogous to the density-dependent behavior, and can be attributed to a time-dependent carrier density which results from a combination of carrier cooling and photon emission. A strong magnetic field applied perpendicular to the plane of a QW confines electrons and holes to Landau orbits in the QW plane, transforming the QW into a quantum dot (QD) whose radius shrinks with increasing magnetic field strength. This strong magnetic confinement enhances the normal mode coupling strength in the microcavity via an increase in exciton oscillator strength. The time-resolved stimulated emission of a QW microcavity which has been transformed to a QD laser by magnetic confinement reveals a fast relaxation which is uninhibited by the magnetic field, indicating the absence of a phonon bottleneck. As a novel manifestation of cavity-modified emission, we demonstrate synchronization of the stimulated emission of a microcavity laser to the electron spin precession in a magnetic field, achieved by modulating the optical gain for the circularly polarized emission via the Larmor precession. The oscillating laser emission is locked to the completely internal electron spin precession clock, and the GHz oscillation frequencies depend only on the magnetic field strength and the QW material parameters.
APA, Harvard, Vancouver, ISO, and other styles
6

Rolf, Lucia. "Ramanspektroskopie an Quantentöpfen in Microcavities." [S.l. : s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=958761906.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Savvidis, Pavlos G. "Polariton dynamics in semiconductor microcavities." Thesis, University of Southampton, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.392705.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Solnyshkov, Dmitry. "Exciton-polaritons in planar microcavities." Clermont-Ferrand 2, 2007. http://www.theses.fr/2007CLF21801.

Full text
Abstract:
Cette thèse est consacrée aux propriétés des exciton-polaritons, les particules mixtes formées à partir de la lumière et la matière dans les microcavités de semi-conducteurs dans le régime de couplage fort. D'abord, j'analyse la possibilité de condensation de Bose des exciton- polaritons à température ambiante dans les microcavités de GaN avec les équations de Boltzmann semi-classiques. Puis les effets de polarisation dans le régime d'oscillateur paramétrique sont étudiés avec les équations de Boltzmann semi-classiques avec pseudospin. La deuxième partie de la thèse est consacrée aux propriétés des condensats et modes macrooccupés des exciton-polaritons. Leur polarisation, dispersion des excitations, propagation, localisation et superfluidité sont décrits avec l'équation de Gross-Pitaevskii
APA, Harvard, Vancouver, ISO, and other styles
9

Niu, Nan. "GaN/InGaN Microcavities and Applications." Thesis, Harvard University, 2015. http://nrs.harvard.edu/urn-3:HUL.InstRepos:17467361.

Full text
Abstract:
Semiconductor micro- and nano-cavities are excellent platforms for experimental studies of optical cavities, lasing dynamics, and cavity Quantum Electrodynamics (QED). Common materials for such experiments are narrow bandgap semiconductor materials with well-developed epitaxial growth technologies, such as GaAs and InP, among others. Gallium nitride (GaN) and its alloys are industrially viable materials with wide direct bandgaps, low surface re-combination velocities, and large exciton binding energies, offering the possibility of room temperature realization of light-matter interaction. Controlling light-matter interaction is at the heart of nanophotonic research which leads to ultra-low threshold lasing, photonic qubits, and optical strong coupling. Technologically, due to its blue emission, GaN photonic cavities with indium gallium nitride (InGaN) active mediums serve as efficient light sources for the fast growing photonic industry, optical computing and communication networks, display technology, as well as quantum information processing. The main challenges in fabricating high quality GaN cavity are due to its chemical inertness and low material quality as a result of strain-induced defects and threading dislocations. In this dissertation, I examine the designs, novel fabrication processes, and characterizations of high quality factor GaN microdisk and photonic crystal nanobeam cavities with different classes of InGaN active medium, namely quantum dots (QDs), quantum wells (QWs), and fragmented quantum wells (fQWs), for investigating light-matter interaction between cavity and these active media. This dissertation is carefully organized into four chapters. Chapter 1 outlines the background of the research, the materials and growth, and the necessary technique Photoelectrochemical (PEC) etching which is uniquely used to undercut and suspend GaN cavities. Chapter 2 outlines the fabrications, optical experiments, and tuning technique developed for GaN/InGaN microdisks. Microdisks are circular resonant cavities that support whispering gallery modes. Through the use of optimized dry etching and PEC, high quality factor microdisks with relatively small modal volume are fabricated with immediate demonstration of low threshold lasing. On the path to achieving light and matter interactions, irreversible tuning of the cavity mode of p-i-n doped GaN/InGaN microdisks is achieved through photo-excitation in a water environment. Such a technique paves the way for deterministically and spectrally matching the cavity mode to the emitter’s principle emission. Chapter 3 outlines the work done on the high quality GaN photonic crystal nanobeams with InGaN QDs and fQWs. The fragmented nature of the fQW layer has a surprisingly dramatic influence on the lasing threshold. A record low threshold is demonstrated that is an order of magnitude lower in threshold than identical nanobeams with homogeneous QW, and comparable to the best devices in other III-V material systems. As an active medium with greater carrier confinement than quantum wells, and higher carrier capture probability than quantum dots, the fQW active medium, in combination with the nanobeam cavity with ultra-small modal volume and high quality factor, provides an ideal means of probing the limits of light and matter interactions in the nanoscale. Moreover, GaN/InGaN nanopillars are fabricated to isolate a single InGaN QD for understanding its emission properties. Antibunching is observed, demonstrating the quantum nature of the QD emission. Gas tuning is attempted on GaN nanobeams with InGaN QDs to achieve QD-cavity mode coupling and to demonstrate cavity enhanced single photon emission. Last but not least, Chapter 4 concludes the dissertation with summary and future directions.
Engineering and Applied Sciences - Applied Physics
APA, Harvard, Vancouver, ISO, and other styles
10

Mischok, Andreas. "Controlling Light in Organic Microcavities." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-206972.

Full text
Abstract:
This thesis deals with the use of microcavity resonators for the control of light in organic active materials. In addition to the vertical confinement provided by highly reflecting mirrors in a vertical cavity surface emitting laser (VCSEL), in-plane patterning facilitates additional ways to manipulate the cavity dispersion and enables the observation of novel photonic modes in highly confined systems and an improved performance of organic solid state lasers. Furthermore, organic microcavities are employed for efficient spectrally sensitive photodetection in the near infrared. In microcavities comprising two dielectric distributed Bragg reflectors sandwiching an organic active blend of the matrix molecule Alq3 and the laser dye DCM, optically pumped lasing is investigated, exhibiting a broad spectral tunability over 90 nm due to the large gain bandwith of the laser dye. To directly influence the microcavity dispersion, different interlayers are introduced into the system, facilitating a red-shift of the cavity resonance due to the formation of Tamm-plasmon-polariton states (when using plasmonic Ag interlayers) or an increase of the optical cavity thickness (when using non-absorbing layers such as SiO2). Both concepts are explored and enable strong spectral shifts on the order of 10 meV-100 meV when using interlayers of only few tens of nm in thickness. In order to enhance the optical quality of metal-organic microcavities, the growth of noble metal layers on top of organic films can be improved by the use of diffusion barriers, stopping the diffusion of metal atoms into the organics, and seed layers which provide an improved surface wetting. Both concepts in total lead to an enhancement of the quality factor of such devices by a factor of two. The manipulation of the cavity resonance using different interlayers provides the ability to structure the photon energy landscape in the device plane on the microscale. Using photolithography, photonic wires and dots are fabricated to laterally restrict the photons in potential wells, leading to the observation of discretised energy spectra in two and three dimensions. To facilitate an in-depth investigation, dispersion tomography is utilised and yields the angle resolved emission of multi-dimensionally confined photons in all directions. In metal-organic photonic dots and triangular wedges, such three-dimensional trapping is exploited to reduce parasitic modes, leading to reduced thresholds of an organic microlaser by one order of magnitude. Complex transversal modes are observed in the device emission as a result of the strong lateral confinement that is achieved by such patterning. The manipulation of the photon energy landscape can not only be utilised for enhanced confinement but also for the introduction of photonic lattices. By adding periodic stripes of either Ag or SiO2 into an organic microcavity, an optical Kronig-Penney potential is realised, directly showing the formation of photonic Bloch states in the microcavity dispersion. Utilising a modified Kronig-Penney theory, photons are assigned a polarisation-dependent effective mass, facilitating a quantitative allocation of calculated and observed modes and explaining the emergence of zero and pi-phase coupling of spatially extended supermodes. Finally, by utilising an two-beam excitation geometry, direct control over lasing from multiple discretised states can be exerted, enabling spectral and angular tunability of devices on the microscale. In an alternative concept, a full microcavity stack is deposited onto a periodic grating which couples the waveguided (WG) modes in the active cavity layer to the vertical emission. Coherent interaction between linear WG and parabolic vertical modes is indicated by anti-crossing points where the dispersion of both overlaps. In this hybrid system, novel lasing modes arise not only at the position of the VCSEL parabola apex but also at points of hybridization, showing a drastically enhanced in-plane spatial coherence of at least 50 micrometer. Finally, the concept of organic microcavities is applied towards efficient and spectrally sensitive photodetectors. Making use of the intermolecular charge transfer (CT) state in donor-acceptor blends of organic solar cells, the strong field enhancement of a microcavity is exploited to significantly increase the external quantum efficiency of the initially weak CT absorption at resonance. Consequently, near-infrared photodetection is enabled by cavity-enhanced CT state absorption, leading to devices showing competitive specific detectivities without the need of an external voltage and an EQE above 20% (18% at 950 nm) with a full width at half maximum of significantly below 50 nm. The detectors are shown to be tunable in a broad spectral range via the angular dispersion of the optical microcavity or a thickness variation of the electron and hole transport layers in the solar cell. These findings not only facilitate interesting applications but also enable the direct excitation and observation of the CT state that is integral to the working principles of organic solar cells
Die vorliegende Dissertation beschäftigt sich mit der Kontrolle über Emission und Absorption organischer aktiver Materialien mittels Mikrokavitätsresonatoren. Zusätzlich zum vertikalen Einschluss der Photonen zwischen hochreflektierenden Spiegeln in oberflächenemittierenden Mikrokavitäten (VCSEL, s.o.) werden Strukturierungen in der Bauteilebene hinzugefügt, um eine direkte Manipulation der Photonendispersion zu ermöglichen. Resultierend aus diesen Ergebnissen sind die Beobachtung neuartiger photonischer Moden sowie verbesserte Betriebseigenschaften von organischen Festkörperlasern. Desweiteren wird das Konzept der organischen Mikrokavität zur effizienten und spektral sensitiven Detektion von Nahinfrarot-Photonen angewendet. In Mikrokavitäten aus zwei dielektrischen Bragg-Spiegeln (DBR), welche eine organische aktive Schicht aus dem Matrixmaterial Alq3 und dem Laserfarbstoff DCM einschliessen, wird optisch gepumptes Lasing beobachtet. Dabei ist die Emission spektral über einen weiten Bereich von 90 nm stufenlos einstellbar, was durch die hohe optische Gewinnbandbreite des Laserfarbstoffs ermöglicht wird. Um die Dispersion von Photonen in Mikrokavitäten direkt beeinflussen zu können, werden verschiedene Zwischenschichten in den Laser eingebracht, welche eine Rotverschiebung der Emission nach sich ziehen. In metall-organischen Kavitäten kann dieser Effekt durch die Bildung von Tamm-Plasmon-Polariton Quasiteilchen erklärt werden, die durch die Interaktion der optischen Moden mit den Plasmonen in einer dünnen Silberschicht entstehen. Alternativ werden nichtabsorbierende SiO2-Zwischenschichten eingefügt, welche die optische Kavitätsdicke vergrössern und ähnliche starke Rotverschiebungen der Emission von 10 meV-100 meV nach sich ziehen. Um die optische Qualität metall-organischer Kavitäten zu verbessern, wird das Wachstum der edlen Ag-Schicht auf amorphen organischen Schichten mithilfe von Diffusionsbarrieren und Keimschichten kontrolliert. Die Kombination beider Konzepte ermöglicht eine Verbesserung des Qualitätsfaktors solcher Bauteile um den Faktor 2. Durch die Manipulation der Photonendispersion mithilfe dielektrischer und plasmonischer Zwischenschichten wird eine Strukturierung der photonischen Potentiallandschaft in der Bauteilebene auf Mikrometer-Skala ermöglicht. Mittels Photolithographie werden Photonische Drähte und Punkte hergestellt, welche das Licht auch lateral in Potentialtöpfen einschliessen und zur Beobachtung von diskretisierten Emissionspektren in zwei und drei Dimensionen führen. Um diese Untersuchungen zu erweitern, wird eine tomographische Methode entwickelt, um die winkelaufgelöste Dispersion dieser mehrdimensional eingeschlossenen Photonen in allen Richtungen aufzunehmen. Die Ergebnisse dieser Untersuchung werden in metall-organischen photonischen Punkten und Dreieck-Strukturen ausgenutzt und führen dabei zu einer Verringerung der Laserschwelle von bis zu einer Grössenordnung. Die dabei entstehenden komplexen Transversalmoden sind ein Zeichen für die starke Konzentration des Lichts in solchen Strukturen. Die laterale Strukturierung organischer Mikrokavitäten kann nicht nur für den vollständigen Einschluss von Licht ausgenutzt werden, sondern ermöglicht weiterhin die Beobachtung von photonischen Bandstrukturen in periodischen Gittern. Solch periodische Strukturen bestehend entweder aus Silber oder SiO2 ermöglichen die Realisierung eines optischen Kronig-Penney Potentials in Mikrokavitäten was schlussendlich zur Beobachtung optischer Bloch-Zustände in der Dispersion führt. Durch eine Modifizierung der Kronig-Penney Theorie, bei der unter anderem den Photonen eine polarisationsabhängige effektive Masse zugewiesen wird, ist eine quantitative Berechnung der Modenpositionen in solchen Systemen möglich. In Theorie und experimentellen Untersuchungen wird dabei das Auftreten von 0- oder pi-phasengekoppelten räumlich ausgedehnten Supermoden erklärt. Mithilfe der Anregung durch zwei interferierende Laserstrahlen kann desweiteren eine direkte Kontrolle über die Wellenlänge sowie den Auskopplungswinkel der stimulierten Emission ausgeübt werden. In einem alternativen Konzept der lateralen Strukturierung werden organische Mikrokavitäten auf periodische Gitter aufgedampft, was zu einer kohärenten Kopplung von Wellenleitermoden der aktiven Schicht in die vertikale Emission führt. Diese Moden treten als lineare Dispersion in winkelaufgelösten Spektren auf und zeigen eine direkte Interaktion mit der parabolischen Dispersion der VCSEL-Mode an (Anti-)Kreuzungspunkten. In diesem hybriden System lassen sich neuartige Lasermoden beobachten, welche nicht nur am Scheitelpunkt der Kavitätsparabel auftreten, sondern auch an Punkten, die durch die Hybridisierung beider Systeme entstehen. Diese Kopplung von vertikalen und lateralen Lasermoden zeigt eine drastisch erhöhte Kohärenzlänge von mindestens 50 Mikrometern in der Probenebene. Schließlich wird das Konzept einer organischen Mikrokavität noch in absorbierenden Systemen eingesetzt. Durch das Einbringen einer organischen Solarzelle in eine optische Kavität wird eine starke Erhöhung des Felds im spektralen Bereich des sonst nur schwach absorbierenden intermolekularen Ladungstransferzustands in Donator-Akzeptor Mischschichten ermöglicht. Die Ausnutzung dieses Zustands ermöglicht eine spektral scharfe (Halbwertsbreite deutlich unter 50 nm) Detektion von Nahinfrarotphotonen mit einer externen Quanteneffizienz von über 20% (18% für 950 nm) und einer konkurrenzfähigen spezifischen Detektivität. In weiteren Untersuchungen zeigen sich diese Detektoren als spektral durchstimmbar, zum Einen durch die parabolische Dispersion der Mikrokavität, zum Anderen durch die Variation der Dicken der Elektron- und Lochtransportschichten. Diese Ergebnisse ermöglichen nicht nur interessante Anwendungen, sondern auch die direkte Beobachtung und Anregung des Ladungstransferzustandes, welcher eine zentrale Rolle in der Funktion organischer Solarzellen spielt
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Microcavities"

1

Kavokin, Alexey. Microcavities. Oxford: Oxford University Press, 2011.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Kerry, Vahala, ed. Optical microcavities. Singapore: World Scientific, 2004.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Timofeev, Vladislav, and Daniele Sanvitto, eds. Exciton Polaritons in Microcavities. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-24186-4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

1940-, Chang Richard K., and Campillo Anthony J, eds. Optical processes in microcavities. Singapore: World Scientific, 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Daniele, Sanvitto, and SpringerLink (Online service), eds. Exciton Polaritons in Microcavities: New Frontiers. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Rarity, John, and Claude Weisbuch, eds. Microcavities and Photonic Bandgaps: Physics and Applications. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0313-5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

John, Rarity, Weisbuch C. 1945-, North Atlantic Treaty Organization. Scientific Affairs Division., and NATO Advanced Study Institute on Quantum Optics in Wavelength Scale Structures (1995 : Cargèse, France), eds. Microcavities and photonic bandgaps: Physics and applications. Dordrecht: Kluwer Academic Publishers, 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Hiroyuki, Yokoyama, and Ujihara Kikuo, eds. Spontaneous emission and laser oscillation in microcavities. Boca Raton: CRC Press, 1995.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Rarity, John. Microcavities and Photonic Bandgaps: Physics and Applications. Dordrecht: Springer Netherlands, 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Kavokin, Alexey V., Jeremy J. Baumberg, Guillaume Malpuech, and Fabrice P. Laussy. Microcavities. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198782995.001.0001.

Full text
Abstract:
Both rich fundamental physics of microcavities and their intriguing potential applications are addressed in this book, oriented to undergraduate and postgraduate students as well as to physicists and engineers. We describe the essential steps of development of the physics of microcavities in their chronological order. We show how different types of structures combining optical and electronic confinement have come into play and were used to realize first weak and later strong light–matter coupling regimes. We discuss photonic crystals, microspheres, pillars and other types of artificial optical cavities with embedded semiconductor quantum wells, wires and dots. We present the most striking experimental findings of the recent two decades in the optics of semiconductor quantum structures. We address the fundamental physics and applications of superposition light-matter quasiparticles: exciton-polaritons and describe the most essential phenomena of modern Polaritonics: Physics of the Liquid Light. The book is intended as a working manual for advanced or graduate students and new researchers in the field.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Microcavities"

1

Gibbs, Hyatt M. "Nonlinear Semiconductor Microcavities." In Optics of Semiconductors and Their Nanostructures, 189–208. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-09115-9_9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Michetti, Paolo, Leonardo Mazza, and Giuseppe C. La Rocca. "Strongly Coupled Organic Microcavities." In Nano-Optics and Nanophotonics, 39–68. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-45082-6_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Villeneuve, Pierre R., Shanhui Fan, and J. D. Joannopoulos. "Microcavities in Photonic Crystals." In Microcavities and Photonic Bandgaps: Physics and Applications, 133–51. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0313-5_13.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Serpengüzel, A., S. Arnold, G. Griffel, and J. A. Lock. "Optical Spectroscopy of Microcavities." In Quantum Optics and the Spectroscopy of Solids, 237–48. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-015-8796-9_12.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Villeneuve, Pierre R., Shanhui Fan, J. D. Joannopoulos, Kuo-Yi Lim, Jerry C. Chen, G. S. Petrich, L. A. Kolodziejski, and Rafael Reif. "Microcavities in Channel Waveguides." In Photonic Band Gap Materials, 411–26. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1665-4_22.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Yamamoto, Yoshihisa, and Richart E. Slusher. "Optical Processes in Microcavities." In Confined Electrons and Photons, 871–78. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-1963-8_46.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Yamamotoa, Y., J. Jacobson, S. Pau, H. Cao, and G. Björk. "Exciton-Polaritons in Microcavities." In Nanostructures and Quantum Effects, 157–64. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-79232-8_22.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Laussy, Fabrice P. "Quantum Dynamics of Polariton Condensates." In Exciton Polaritons in Microcavities, 1–42. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-24186-4_1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Wouters, Michiel, and Vincenzo Savona. "Truncated Wigner Approximation for Nonequilibrium Polariton Quantum Fluids." In Exciton Polaritons in Microcavities, 267–88. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-24186-4_10.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Cerda-Méndez, Edgar, Dmitryi Krizhanovskii, Michiel Wouters, Klaus Biermann, Rudolf Hey, Maurice S. Skolnick, and Paulo V. Santos. "Exciton–Polariton Coupling with Acoustic Phonons." In Exciton Polaritons in Microcavities, 289–306. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-24186-4_11.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Microcavities"

1

Bathish, Baheej, Raanan Gad, Fan Cheng, Kristoffer Karlsson, Ramgopal Madugani, Mark Douvidzon, Síle Nic Chormaic, and Tal Carmon. "Plasma Microcavities." In CLEO: Science and Innovations, STu4Q.6. Washington, D.C.: Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_si.2024.stu4q.6.

Full text
Abstract:
We demonstrate, for the first time, an optical microresonator with plasma inside. This plasma cavity might impact new types of plasma-based optical interconnects and electrically pumped ultracoherent-microlasers.
APA, Harvard, Vancouver, ISO, and other styles
2

van Exter, Martin P., Chunjiang He, and Corné Koks. "Mode formation in optical microcavities." In Quantum 2.0, QTh3A.8. Washington, D.C.: Optica Publishing Group, 2024. http://dx.doi.org/10.1364/quantum.2024.qth3a.8.

Full text
Abstract:
We show how the resonant modes in optical microcavities differ from the well-known Gaussian modes, due to non-paraxial and mirror-shape effects. We discuss their resonance frequencies, (polarization-resolved) mode profiles, and attainable finesse.
APA, Harvard, Vancouver, ISO, and other styles
3

"WGM Microcavities." In Digest of the LEOS Summer Topical Meetings Biophotonics/Optical Interconnects and VLSI Photonics/WBM Microcavities, 2004. IEEE, 2004. http://dx.doi.org/10.1109/leosst.2004.1338724.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

"WGM Microcavities." In Digest of the LEOS Summer Topical Meetings Biophotonics/Optical Interconnects and VLSI Photonics/WBM Microcavities, 2004. IEEE, 2004. http://dx.doi.org/10.1109/leosst.2004.1338740.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

"WGM Microcavities." In Digest of the LEOS Summer Topical Meetings Biophotonics/Optical Interconnects and VLSI Photonics/WBM Microcavities, 2004. IEEE, 2004. http://dx.doi.org/10.1109/leosst.2004.1338760.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

"WGM Microcavities." In Digest of the LEOS Summer Topical Meetings Biophotonics/Optical Interconnects and VLSI Photonics/WBM Microcavities, 2004. IEEE, 2004. http://dx.doi.org/10.1109/leosst.2004.1338722.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

"WGM Microcavities." In Digest of the LEOS Summer Topical Meetings Biophotonics/Optical Interconnects and VLSI Photonics/WBM Microcavities, 2004. IEEE, 2004. http://dx.doi.org/10.1109/leosst.2004.1338723.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Jewell, Jack. "Practical Microcavities?" In Quantum Optoelectronics. Washington, D.C.: Optica Publishing Group, 1997. http://dx.doi.org/10.1364/qo.1997.qwa.1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Harayama, Takahisa, and Satoshi Sunada. "Rotating optical microcavities." In 2007 Conference on Lasers and Electro-Optics - Pacific Rim. IEEE, 2007. http://dx.doi.org/10.1109/cleopr.2007.4391546.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Huet, Vincent, Alphonse Rasoloniaina, Pierre Guilleme, Philippe Rochard, Patrice Feron, Michel Mortier, Ariel Levenson, Kamel Bencheikh, Alejandro Yacomotti, and Yannick Dumeige. "Slow-light microcavities." In 2017 Conference on Lasers and Electro-Optics Europe (CLEO/Europe) & European Quantum Electronics Conference (EQEC). IEEE, 2017. http://dx.doi.org/10.1109/cleoe-eqec.2017.8086466.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Microcavities"

1

Fan, X., H. Wang, H. Q. Hou, and B. E. Hammons. Stimulated emission from semiconductor microcavities. Office of Scientific and Technical Information (OSTI), April 1997. http://dx.doi.org/10.2172/468580.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Wang, Hailin. Optical Processes in Semiconductor Microcavities. Fort Belvoir, VA: Defense Technical Information Center, June 2000. http://dx.doi.org/10.21236/ada380316.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Khitrova, Galina. Controlling Spontaneous Emission of Semiconductor Microcavities. Fort Belvoir, VA: Defense Technical Information Center, September 1999. http://dx.doi.org/10.21236/ada368694.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Khitrova, Galina. Controlling Spontaneous Emission in Semiconductor Microcavities. Fort Belvoir, VA: Defense Technical Information Center, February 2001. http://dx.doi.org/10.21236/ada413378.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Wang, H., H. Q. Hou, and B. E. Hammons. Anomalous normal mode oscillations in semiconductor microcavities. Office of Scientific and Technical Information (OSTI), April 1997. http://dx.doi.org/10.2172/468579.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Wang, Hailin. Optical Processes in High-Q Semiconductor Microcavities. Fort Belvoir, VA: Defense Technical Information Center, March 2004. http://dx.doi.org/10.21236/ada422647.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Khitrova, Galina. 97-AASERT Controlling Spontaneous Emission in Semiconductor Microcavities. Fort Belvoir, VA: Defense Technical Information Center, February 2001. http://dx.doi.org/10.21236/ada417265.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Raymer, Michael G. Quantum Logic Using Excitonic Quantum Dots in External Optical Microcavities. Fort Belvoir, VA: Defense Technical Information Center, September 2003. http://dx.doi.org/10.21236/ada417802.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Mendez, Emilio E. Novel Electric-Field Effects in Quantum Wells, Superlattices, and Microcavities. Fort Belvoir, VA: Defense Technical Information Center, June 2000. http://dx.doi.org/10.21236/ada384404.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Deppe, Dennis G. Experimental Studies of Mode Coupling and Prospects for Lasing in 3-Dimensionally Confined Microcavities. Fort Belvoir, VA: Defense Technical Information Center, February 2001. http://dx.doi.org/10.21236/ada387547.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Microcavities' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography