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Journal articles on the topic 'Light wavelength conversion'

Author: Grafiati

Published: 7 July 2024

Last updated: 31 July 2025

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1

Md, Abu Jubair. "Wavelength Conversion via Refractive Index Tuning of A Hexagonal Photonic Crystal Cavity." International Journal of Engineering Works (ISSN:2409-2770) 4, no. 4 (2017): 54–59. https://doi.org/10.5281/zenodo.556269.

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Photonic crystals are consisting of a periodic dielectric medium that can affect the electromagnetic wave propagation by creating allowed and forbidden electronic energy bands. Bands of wavelengths which are not allowed are called photonic band gaps. An optical cavity can trap light at resonance frequencies and thus also be called as an optical resonator. By rapidly changing the cavity’s resonance wavelength, it is possible to forcefully change the wavelength of photons captured in a cavity. It is achievable that the wavelength conversion of light across the simple dynamic refractive index tun

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Wahidin, Naufal Rabah, Eka Cahya Prima, and Riandi Riandi. "Hands-on Solar Energy: Exploring How Light Influence Solar Cell Performance in Junior High School Experiments." JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) 8, no. 2 (2024): 75–81. https://doi.org/10.30599/jipfri.v8i2.3349.

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This study explores the impact of light wavelength on solar cell performance through a hands-on laboratory experiment designed for junior high school students. The experiment utilized a spectrometer app to measure the dominant wavelengths of various visible light colors and assessed the corresponding voltage and current generated by a solar cell. Results indicated a clear inverse relationship between wavelength and solar cell output, with shorter wavelengths producing higher voltage and current values. For example, light with a wavelength of 400 nm resulted in the highest voltage (1.75 V) and

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Wu, Yuning, Zhiwei Shi, Huan Jiang, and Yaohua Deng. "Multi-Wavelength Spot-Array Beams Based on Tunable Dammann Grating Metasurface." Photonics 10, no. 2 (2023): 141. http://dx.doi.org/10.3390/photonics10020141.

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The structured light projection (SLP) method occupies a crucial position in three-dimensional (3D) imaging technology. Different working wavelengths of structured light can be employed depending on the situation. However, there are few structured lights that can be modulated based on wavelength at present. Therefore, we have comprehensively investigated and designed a Dammann grating (DG) based on metasurface, which can be controlled through multi-beam interference (MBI) to achieve a change of the working wavelength. In this work, we can convert the straight waveguide to the helical waveguide

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Li, Yang, Zhijin Huang, Zhan Sui, et al. "Optical anapole mode in nanostructured lithium niobate for enhancing second harmonic generation." Nanophotonics 9, no. 11 (2020): 3575–85. http://dx.doi.org/10.1515/nanoph-2020-0222.

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AbstractSecond harmonic generation (SHG) with a material of large transparency is an attractive way of generating coherent light sources at exotic wavelength range such as VUV, UV and visible light. It is of critical importance to improve nonlinear conversion efficiency in order to find practical applications in quantum light source and high resolution nonlinear microscopy, etc. Here an enhanced SHG with conversion efficiency up to 10−2% at SH wavelength of 282.7 nm under 11 GW/cm2 pump intensity via the excitation of anapole in lithium niobite (LiNbO3, or LN) nanodisk through the dominating d

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Hemminga, D. J., O. O. Versolato та J. Sheil. "Simulations of plasmas driven by laser wavelengths in the 1:0642—10:6 μm range for their characterization as future extreme ultraviolet light sources". Physics of Plasmas 30, № 3 (2023): 033301. http://dx.doi.org/10.1063/5.0125936.

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We characterize the properties of extreme ultraviolet (EUV) light source plasmas driven by laser wavelengths in the [Formula: see text] range and laser intensities of [Formula: see text] W cm−2 for [Formula: see text]. Detailed numerical simulations of laser-irradiated spherical tin microdroplet targets reveal a strong laser-wavelength dependence on laser absorptivity and the conversion efficiency of generating in-band EUV radiation. For [Formula: see text] irradiation, the increase in in-band radiation with increasing laser intensity is offset by only a minor reduction in conversion efficienc

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Zhang, Yungang, Yongda Wang, Yunjie Liu, Xinyu Ai, Zhiguo Zhang, and Jimeng Li. "Measurement of CS2 Absorption Cross-Sections in the 188–215 nm Region at Room Temperature and Atmospheric Pressure." Applied Spectroscopy 75, no. 1 (2020): 15–21. http://dx.doi.org/10.1177/0003702820955244.

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Carbon disulfide, an important sulfur-containing species, has strong absorption lines in the wavelength range of 188 nm to 215 nm. It is difficult to accurately measure the absorption cross sections of carbon disulfide because carbon disulfide will be easily converted into carbon sulfide when it is exposed to ultraviolet light. In this study, the absorption cross sections of carbon disulfide were measured by reducing carbon disulfide conversion. The factors affecting carbon disulfide conversion, including gas flow rate, ultraviolet light intensity, and duration of illumination, were studied to

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Wang, Li Li, and Xiang Yan Qiu. "Theoretical Analysis of Wavelength Conversion in Fiber Bragg Grating External Cavity Lasers." Applied Mechanics and Materials 236-237 (November 2012): 981–83. http://dx.doi.org/10.4028/www.scientific.net/amm.236-237.981.

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A new theoretical model for wavelength conversion based on XGM in fiber grating external cavity lasers is presented. The expression of mutual coupling parameter βm which indicates the efficiency of the wavelength conversion.was introduced in the model and and confirmed by numerical simulation. The theoretical analysis showed that the mutual coupling parameter βm is decided by intensity and frequency interval of CW light and the IM light, and the simulation results showed that the larger βm was, the better wavelength conversion was.

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Arimi, Arsou, Ralf Dillert, Gerald Dräger, and Detlef W. Bahnemann. "Light-Induced Reactions of Chlorpromazine in the Presence of a Heterogeneous Photocatalyst: Formation of a Long-Lasting Sulfoxide." Catalysts 9, no. 7 (2019): 627. http://dx.doi.org/10.3390/catal9070627.

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A commercial carbon-modified titanium dioxide, KRONOClean 7000, was applied as a UV(A) and visible-light active photocatalyst to investigate the conversion of the antipsychotic pharmaceutical chlorpromazine in aqueous phase employing two monochromatic light sources emitting at wavelengths of 365 and 455 nm. Photocatalytic and photolytic conversion of chlorpromazine under both anaerobic and aerobic conditions was analyzed using a HPLC-MS technique. Depending on the irradiation wavelength and presence of oxygen, varying conversion rates and intermediates revealing different reaction pathways wer

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Liu, Yi, Zhiguo Gui, and Jialei Liu. "Research Progress of Light Wavelength Conversion Materials and Their Applications in Functional Agricultural Films." Polymers 14, no. 5 (2022): 851. http://dx.doi.org/10.3390/polym14050851.

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As new fluorescent materials, light wavelength conversion materials (light conversion agents) have attracted increasing attention from scientific researchers and agricultural materials companies due to their potential advantages in efficiently utilizing solar energy and increasing crop yield. According to the material properties, the light conversion agents can be divided into fluorescent dyes, organic rare-earth complexes, and inorganic rare-earth complexes. The current researches indicates that the fluorescent dyes have relatively high production costs, poor light stability, difficult degrad

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Taghizad Fanid, A., and A. Rostami. "A proposal for wide range wavelength switching process using optical force." Physica Scripta 96, no. 12 (2021): 125537. http://dx.doi.org/10.1088/1402-4896/ac3fd3.

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Abstract Optomechanical wavelength up-conversion based on optical force and core–shell scattering effects are used to control light coupling between two waveguides. This system consists of two parallel optical waveguides with 20 μm lengths suspended on a silica substrate embedded with Ag/Si/SiO2 core–shell nanoparticles. By mid-IR plane wave illumination with different intensities and different wavelengths on nanoparticles, scattering would increase and result in an improvement in attractive gradient optical force exerted on waveguides. Via bending waveguides toward each other, visible light p

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KOUTA, Hikaru, and Yasuhiko KUWANO. "Light Scattering in a Wavelength Conversion BBO Single Crystal." Review of Laser Engineering 26, no. 3 (1998): 261–64. http://dx.doi.org/10.2184/lsj.26.261.

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Arahira, Shin, and Hitoshi Murai. "Wavelength conversion of incoherent light by sum-frequency generation." Optics Express 22, no. 11 (2014): 12944. http://dx.doi.org/10.1364/oe.22.012944.

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Lin, Jui-Teng, Da-Chuan Cheng, Kuo-Ti Chen, and Hsia-Wei Liu. "Dual-Wavelength (UV and Blue) Controlled Photopolymerization Confinement for 3D-Printing: Modeling and Analysis of Measurements." Polymers 11, no. 11 (2019): 1819. http://dx.doi.org/10.3390/polym11111819.

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The kinetics and modeling of dual-wavelength (UV and blue) controlled photopolymerization confinement (PC) are presented and measured data are analyzed by analytic formulas and numerical data. The UV-light initiated inhibition effect is strongly monomer-dependent due to different C=C bond rate constants and conversion efficacies. Without the UV-light, for a given blue-light intensity, higher initiator concentration (C10) and rate constant (k’) lead to higher conversion, as also predicted by analytic formulas, in which the total conversion rate (RT) is an increasing function of C1 and k’R, whic

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Yuan, Yu Chen, Chen Wu Wu, and Guang Nan Chen. "Responses of Thin Film Photovoltaic Cell to Irradiation under Double Laser Beams of Different Wavelength." Materials Science Forum 743-744 (January 2013): 937–42. http://dx.doi.org/10.4028/www.scientific.net/msf.743-744.937.

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During the process of Laser beam long-range energy transmission based on the photovoltaic principle, the temperature elevation of the photovoltaic cell under Laser irradiation would greatly affect its photoelectric conversion efficiency. In this work, the heat generation mechanism of thin-film photovoltaic cell under Laser irradiation was analyzed based on the energy conversion relationship between light, electricity and heat. The output voltage characteristic of a thin film GaInP/GaAs/Ge triple-junction photovoltaic cell under irradiation of dual-wavelength Laser beam was investigated, and th

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Skala, Vaclav. "Multispectral Image Generation from RGB Based on WSL Color Representation: Wavelength, Saturation, and Lightness." Computers 12, no. 9 (2023): 182. http://dx.doi.org/10.3390/computers12090182.

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Image processing techniques are based nearly exclusively on RGB (red–green–blue) representation, which is significantly influenced by technological issues. The RGB triplet represents a mixture of the wavelength, saturation, and lightness values of light. It leads to unexpected chromaticity artifacts in processing. Therefore, processing based on the wavelength, saturation, and lightness should be more resistant to the introduction of color artifacts. The proposed process of converting RGB values to corresponding wavelengths is not straightforward. In this contribution, a novel simple and accura

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Tseng, Kuo-Bin. "Efficient multicast routing in wavelength-division-multiplexing networks with light splitting and wavelength conversion." Optical Engineering 44, no. 4 (2005): 045003. http://dx.doi.org/10.1117/1.1886846.

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Jácome-Zambrano, Anthony Leonardo, and Janeth Jácome-Gómez. "Effect of Different Wavelengths of Light on the Productive Response of Free Range Chickens." Erevna: Research Reports 2, no. 2 (2024): 17–28. https://doi.org/10.70171/r8htdm55.

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Justification: although artificial light, adjusted according to its color, can be an effective tool to optimize productivity in poultry farming, there is still limited research on its specific impact on free-range chickens. Objective: to evaluate the effect of four light wavelengths on the productive behavior of free-range chickens. Methodology: a completely randomized design was used with 180 birds distributed across four treatments with different light wavelengths (red, green, orange, and yellow), with three replicas of 15 birds each; food consumption, weight gain, and feed conversion were e

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Lin, Yonghong, Wenjun Huang, Mengyuan Zhanghu, and Zhaojun Liu. "8.2: Invited Paper: The Full‐color Micro‐LED Display with Quantum Dots Inkjet Printing." SID Symposium Digest of Technical Papers 54, S1 (2023): 81–83. http://dx.doi.org/10.1002/sdtp.16227.

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A color conversion film, including red and green quantum dots, is fabricated using inkjet printing. To ensure the efficiency of the color conversion, a color filter is utilized to remove extra blue light. By selecting the appropriate central wavelength for the filter, the color conversion film can convert blue light to red and green light without extra blue light. The color conversion film is stimulated by blue micro‐LED, and the resulting color gamut can achieve 84.5% BT.2020. These results demonstrate that combining a quantum dots film with a color filter can result in full‐color micro‐LED d

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Ni, Ya Ru, Lian Chao Wu, Chun Hua Lu, and Zhong Zi Xu. "Synthesis and Characterization of Rare Earth (Sm,Y) Light Conversion Film." Materials Science Forum 610-613 (January 2009): 257–61. http://dx.doi.org/10.4028/www.scientific.net/msf.610-613.257.

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In this article, Sm(Sal)xPhen, SmyY1-y(Sal)3Phen were synthesized and its films were prepared. They were characterized by infrared spectra (IR), ultra-violet visible spectrometer (UV), X-ray diffraction (XRD) and fluorescence spectroscopy. Sm/Y complexes and its mixture doped with the polyvinyl alcohol (PVA) showed photoluminescence at the wavelength of 646 nm. There was an excellent compatibility among Sm/Y complexes, the polyvinyl alcohol (PVA) and dimethyl sulphoxide (DMSO), which were used to prepare the resin film. The results indicated that Sm/Y rare earth light conversion films were bet

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Gong, Jia-Min, and Zhan-Qiang Hui. "Experimental demonstration of all optical 100 Gbit/s wavelength conversion with 1-to-2 wavelength multicasting based on cross-phase modulation in dispersion flattened highly nonlinear photonic crystal fiber." Journal of Nonlinear Optical Physics & Materials 23, no. 03 (2014): 1450038. http://dx.doi.org/10.1142/s0218863514500386.

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This paper proposed and experimentally demonstrated the effective design of a single-to-dual channel 100 Gbit/s wavelength converter with a simple configuration consisting of a single dispersion flattened highly nonlinear photonic crystal fiber (DS-HNL-PCF) and two optical bandpass filters (OBPFs). The polarity-preserved, ultrafast wavelength conversion with single-to-dual channel multicasting is achieved by simultaneously filtering the red- and blue-chirped spectral component of a probe light. Moreover, the wavelength tunability and dynamic characteristics of designed wavelength converter are

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Михеев, К. Г., Р. Г. Зонов, Д. Л. Булатов, А. Е. Фатеев та Г. М. Михеев. "Лазерно-индуцированный графен на полиимидной пленке: наблюдение эффекта увлечения". Письма в журнал технической физики 46, № 9 (2020): 51. http://dx.doi.org/10.21883/pjtf.2020.09.49375.18152.

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Porous graphene film structures were produced by irradiation of polyimide film with focused continuous wave CO2 laser. Generation of nanosecond pulses of photocurrent was observed in the obtained structures upon excitation by nanosecond laser pulses in a wide range of wavelengths. It is shown that the photocurrent linearly increases with pulsed laser power and its dependence on the angle of light incidence on the film structure is symmetric about the origin. Wavelength dependence of light-to-photocurrent conversion coefficient was measured. The obtained results are explained by photon-drag eff

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Trapani, Danilo, Roberto Macaluso, Isodiana Crupi, and Mauro Mosca. "Color Conversion Light-Emitting Diodes Based on Carbon Dots: A Review." Materials 15, no. 15 (2022): 5450. http://dx.doi.org/10.3390/ma15155450.

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This paper reviews the state-of-the-art technologies, characterizations, materials (precursors and encapsulants), and challenges concerning multicolor and white light-emitting diodes (LEDs) based on carbon dots (CDs) as color converters. Herein, CDs are exploited to achieve emission in LEDs at wavelengths longer than the pump wavelength. White LEDs are typically obtained by pumping broad band visible-emitting CDs by an UV LED, or yellow–green-emitting CDs by a blue LED. The most important methods used to produce CDs, top-down and bottom-up, are described in detail, together with the process th

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Tian, Ying, Lichang Han, Li Yan, Jiayun Wang, Binzhen Zhang, and Zan Jiao. "Optically-Controlled Terahertz Multifunctional Polarization Conversion Metasurface with Reflection and Transmission Modes." Micromachines 13, no. 9 (2022): 1387. http://dx.doi.org/10.3390/mi13091387.

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In the terahertz band, how integrating multiple functions into a device with a tiny unit structure is a challenge. In this paper, an optically-controlled multifunctional linear polarization conversion metasurface working in the terahertz band is proposed. The reflection and transmission polarization conversion functions can be realized by irradiating the metasurface with pump light with different wavelengths. The metasurface is designed with a multilayer structure, and a photosensitive semiconductor alone is used to control multiple functions, which makes the manipulation of multifunctional de

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Kim, Chang Woo, Woo Jin Shin, Mi Jin Choi, et al. "Wavelength conversion effect-assisted dye-sensitized solar cells for enhanced solar light harvesting." Journal of Materials Chemistry A 4, no. 30 (2016): 11908–15. http://dx.doi.org/10.1039/c6ta04526j.

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Lizyakina, O. S., L. B. Vaganova, and D. F. Grishin. "Features of Methyl Methacrylate Polymerization Mediated by Methylene Blue and Ethyl 2-Bromoisobutyrate under Photoirradiation Conditions." Высокомолекулярные соединения Б 65, no. 3 (2023): 189–203. http://dx.doi.org/10.31857/s2308113923700481.

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Using methyl methacrylate polymerization as an example, the features of polymer synthesis in the presence of the catalytic system [methylene blue + ethyl 2-bromoisobutyrate] at room temperature under visible light irradiation are investigated. The effect of polymerization conditions, including the light irradiation wavelength and various structure activators, on the monomer conversion and molecular weight characteristics of polymers is estimated. It is shown that polymerization can proceed in the controlled mode under mild temperature conditions according to the atom transfer mechanism (Metal

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Inoue, K., and N. Takato. "Wavelength conversion for FM light using light injection induced frequency shift in DFB-LD." Electronics Letters 25, no. 20 (1989): 1360. http://dx.doi.org/10.1049/el:19890909.

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Arp, Trevor B., Jed Kistner-Morris, Vivek Aji, Richard J. Cogdell, Rienk van Grondelle, and Nathaniel M. Gabor. "Quieting a noisy antenna reproduces photosynthetic light-harvesting spectra." Science 368, no. 6498 (2020): 1490–95. http://dx.doi.org/10.1126/science.aba6630.

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Photosynthesis achieves near unity light-harvesting quantum efficiency yet it remains unknown whether there exists a fundamental organizing principle giving rise to robust light harvesting in the presence of dynamic light conditions and noisy physiological environments. Here, we present a noise-canceling network model that relates noisy physiological conditions, power conversion efficiency, and the resulting absorption spectra of photosynthetic organisms. Using light conditions in full solar exposure, light filtered by oxygenic phototrophs, and light filtered under seawater, we derived optimal

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Sato, R., T. Ito, K. Magari, et al. "Demonstration of packet-by-packet wavelength conversion from FP-LD light to ITU-T grid wavelengths." IEEE Photonics Technology Letters 13, no. 6 (2001): 612–14. http://dx.doi.org/10.1109/68.924040.

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He, Yanjin, Yongtao Wang, Yanjun Guo, and Lei Ma. "Fine adjustment of emission wavelength, light-conversion quality, photostability of blue-violet light conversion agents based on FRET effect." Dyes and Pigments 217 (September 2023): 111429. http://dx.doi.org/10.1016/j.dyepig.2023.111429.

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Kodama, Takahiro, Kiichiro Kuwahara, Ayumu Kariya, and Rikizo Ikuta. "Free-Space to SMF Integration and Green to C-Band Conversion Based on PPLN." Sensors 24, no. 24 (2024): 8162. https://doi.org/10.3390/s24248162.

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In this study, we experimentally demonstrate a PPLN-based free-space to SMF (single-mode fiber) conversion system capable of efficient long-wavelength down-conversion from 518 nm, optimized for minimal loss in highly turbid water, to 1540 nm, which is ideal for low-loss transmission in standard SMF. Leveraging the nonlinear optical properties of periodically poled lithium niobate (PPLN), we achieve a wavelength conversion efficiency of 1.6% through difference frequency generation while maintaining a received optical signal-to-noise ratio of 10.4 dB. Our findings underscore the potential of int

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Inoue, K., and K. Oda. "Noise suppression in wavelength conversion using a light-injected laser diode." IEEE Photonics Technology Letters 7, no. 5 (1995): 500–501. http://dx.doi.org/10.1109/68.384523.

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Tsuji, Kenichiro, Dwi Cahyo Kuncoro, Takuya Watanabe, Noriaki Onodera, and Masatoshi Saruwatari. "Effect of assist light on XGM-based wavelength-conversion using SOAs." Electronics and Communications in Japan (Part II: Electronics) 88, no. 5 (2005): 10–20. http://dx.doi.org/10.1002/ecjb.20131.

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Wang, Ke, Qi-Dong Liu, Yu-Feng Song, et al. "TiN/Ti3C2 Heterojunction Microfiber-Enhanced Four-Wave Mixing-Based All-Optical Wavelength Converter." Photonics 10, no. 10 (2023): 1066. http://dx.doi.org/10.3390/photonics10101066.

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As a novel nanomaterial, the TiN/Ti3C2 heterojunction has been demonstrated to possess exceptional optoelectronic properties, offering significant potential for applications in fields such as communication, optical sensors, and image processing. The rapid evolution of the internet demands higher communication capacity and information processing speed. In this context, all-optical wavelength conversion, a pivotal technique in all-optical signal processing, holds paramount importance in overcoming electronic bottlenecks, enhancing wavelength utilization, resolving wavelength competition, and mit

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Miwa, Kaito, Hiroki Ebihara, Xu Fang, and Wakana Kubo. "Photo-Thermoelectric Conversion of Plasmonic Nanohole Array." Applied Sciences 10, no. 8 (2020): 2681. http://dx.doi.org/10.3390/app10082681.

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Plasmonic photo-thermoelectric conversion offers an alternative photodetection mechanism that is not restricted by semiconductor bandgaps. Here, we report a plasmonic photodetector consisting of an ultra-thin silver film with nanohole array, whose photodetection mechanism is based on thermoelectric conversion triggered by plasmonic local heating. The detector exhibits a maximum photocurrent at the wavelength of the surface plasmon polaritons, determined by the periodicity of the nanoholes. Hence, the response wavelength of the detector can be controlled via the morphological parameters of the

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Matsuo, Shun, and Hiroyuki Uenohara. "Investigation of pump light generation methods and precise all-optical FWM wavelength conversion for wavelength defragmentation." IEICE Communications Express 9, no. 8 (2020): 383–88. http://dx.doi.org/10.1587/comex.2020xbl0065.

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Kanbe, Kengo, Tsuyoshi Akiyama, Yu Kumagawa, Shuya Hirata, Takatoshi Tsujiai, and Takeo Oku. "Electrochemical fabrication of hierarchical thin films consisting of different polythiophenes and change in photoelectric conversion properties with film thickness." Japanese Journal of Applied Physics 61, no. 6 (2022): 061008. http://dx.doi.org/10.35848/1347-4065/ac6408.

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Abstract Hierarchical polybithiophene/poly(3,4-ethylenedioxythiophene) films with polybithiophene layers of various thicknesses were prepared on an indium tin oxide glass transparent electrode by sequential electrochemical polymerization. In the presence of methyl viologen as a sacrificial electron acceptor, cathodic photocurrents were generated under monochromatic light irradiation. The irradiation light wavelength dependence of the incident photon-to-electron conversion efficiency changed drastically with the thickness of the polybithiophene layer. The main reason for the change in the photo

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Kimovec, Rok, and Marko Topic. "Comparison of measured performance and theoretical limits of gaas laser power converters under monochromatic light." Facta universitatis - series: Electronics and Energetics 30, no. 1 (2017): 93–106. http://dx.doi.org/10.2298/fuee1701093k.

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Evaluation of GaAs laser power converters (LPC) is reported in light of theoretical maximum limits calculated with detailed balance method as proposed by Shockley and Queisser (SQ). Calculations were done for three different theoretical structures of LPCs homogeneously illuminated by monochromatic light. Effects of LPC thickness, central wavelength of a monochromatic light source and various irradiance levels are discussed. Reflection of incident light from the interface between air and GaAs is calculated and countermeasures in the form of single and double layer anti reflection coatings are t

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Ji, Di, Zhitao Hu, Nan Ye, Fufei Pang, and Yingxiong Song. "Photo-Generation of Tunable Microwave Carriers at 2 µm Wavelengths Using Double Sideband with Carrier Suppression Modulation." Applied Sciences 12, no. 6 (2022): 3172. http://dx.doi.org/10.3390/app12063172.

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At 2 µm wavelengths (149.9 THz), hollow-core photonics band gap fibers have higher light power damage thresholds, stable polarization states, and lower losses of 0.1 dB/km. Additionally, a thulium-doped fiber amplifier can provide a gain of >35 dB. Specifically, an indium-rich InGaAs photodetector shows a naturally higher photoresponsivity at 2 µm wavelengths than the C-band. Therefore, using tunable photo-generated microwave technology at 2 µm wavelengths could achieve higher photo-to-electric power conversion efficiencies for higher RF output power applications using the same method at th

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Choi, Uiho, Sung Tae Yoo, Minho Kim, et al. "Far-UVC emission of polarity-engineered AlGaN MQW using carbon nanotube-based cold cathode electron beam." Applied Physics Letters 122, no. 9 (2023): 091104. http://dx.doi.org/10.1063/5.0122697.

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Far-ultraviolet-C (UVC) light is an efficient and safe germicide because the wavelength band eradicates viruses but is harmless to human cells. In this study, electron-beam-pumped AlGaN emitters have been introduced as an alternative to far-UVC light emitting diodes which are limited by certain drawbacks, such as low conductivity and light absorption of the p-layer and side emission due to polarization at short wavelengths. We demonstrate a highly efficient far-UVC AlGaN emitter using a carbon nanotube-based cold cathode electron beam (C-beam). To maximize light emission, materials were grown

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Liu, Wenlong, Xuebin Liu, Qiangqiang Yan, et al. "On-chip optical isolator based on unidirectional wavelength-mode conversion waveguide." Modern Physics Letters B 32, no. 22 (2018): 1850258. http://dx.doi.org/10.1142/s0217984918502585.

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Breaking Lorentz reciprocity is one necessary condition of optical isolator design. Unidirectional wavelength-mode conversion will be realized in a time-dependent system through a short operating range. Based on plasma dispersion effect, generate space-asymmetric periodical time-space modulation on silicon waveguide, and non-reciprocal propagation is realized in the waveguide. The designed unidirectional wavelength-mode conversion waveguide demonstrated that in the forward direction, input 1.55 [Formula: see text]m fundamental mode light signal and then output 1.5492 [Formula: see text]m is of

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Sato, Takenari, Takafumi Nakagawa, Hiroshi Okada, and Yutaka Matsuo. "Diporphyrin magnesium complex with long-wavelength light absorption for organic solar cells." Journal of Porphyrins and Phthalocyanines 19, no. 01-03 (2015): 451–58. http://dx.doi.org/10.1142/s1088424615500303.

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We synthesized a diporphyrin compound [4,7-bis[5-[arylethynyl]-10,20-bis{(triisopropylsilyl)ethynyl}porphyrin-15-yl]]-2,1,3-benzothiadiazole dimagnesium(II)], in which two porphyrin units were linked using a benzodiathiazole unit as an electron-withdrawing moiety. These diporphyrins have low-lying HOMO and LUMO levels with long-wavelength light absorption property. Power conversion efficiency of the organic solar cell using this diporphyrin and mix-PCBM (a 85:15 mixture of [6,6]-phenyl- C 61-butyric acid methyl ester ( PC 61 BM ) and [6,6]-phenyl- C 71-butyric acid methyl ester ( PC 71 BM ) wa

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Tham, Wai Qian, Subhash Chandra, Brian Norton, and Sarah McCormack. "Introducing luminescent solar waveguides for sustainable buildings for enhanced circadian rhythm regulation." Sustainable Buildings 6 (2023): 6. http://dx.doi.org/10.1051/sbuild/2023007.

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As the world strives towards a low-carbon future, nearly-zero energy buildings (NZEB) have been the goal to reduce carbon emissions. Artificial lighting is estimated to consume as high as 40% of the total energy consumption in a commercial building. By utilising daylighting, which is the practice of allowing natural light into a building, energy consumption by artificial lighting can be reduced. Luminescent solar concentrators (LSCs) can act as a collector and waveguide to transport outdoor light into the building through total internal reflection. Besides, LSCs absorb a part of the solar spec

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DURFEE III, C. G., A. RUNDQUIST, S. BACKUS, et al. "GUIDED-WAVE PHASE-MATCHING OF ULTRASHORT-PULSE LIGHT." Journal of Nonlinear Optical Physics & Materials 08, no. 02 (1999): 211–34. http://dx.doi.org/10.1142/s0218863599000151.

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We review the use of hollow waveguides for frequency conversion of ultrafast laser pulses the ultraviolet and extreme ultraviolet. Phase-matching of these processes is reached through a balance of gas and waveguide dispersion. By mixing 400 nm with 800 nm light, ultrashort (8 fs) pulses are generated near 270 nm with high efficiency > 20%. Tuning of the longer-wavelength component in the mixing process allows tuning of the output from 215–308 nm. In the XUV, this guided-wave phase-matching has allowed an increase of conversion efficiency of high-order harmonic generation of 100–1000x over t

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Liu, Huanlin, Hongyue Dai, Fei Zhai, Yong Chen, and Chengying Wei. "Longest Path Reroute to Optimize the Optical Multicast Routing in Sparse Splitting WDM Networks." International Journal of Optics 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/489356.

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Limited by the sparse light-splitting capability in WDM networks, some nodes need to reroute the optical packet to different destination nodes with the high cost of routing for reducing packet loss possibility. In the paper, the longest path reroute optimization algorithm is put forward to jointly optimize the multicast routing cost and wavelength channel assignment cost for sparse splitting WDM networks. Based on heuristic algorithms, the longest path reroute routing algorithm calls multiple longest paths in existing multicast tree to reroute the path passing from the nodes which are violatin

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Yamazaki, E., G. Weichenberg, A. Takada, and T. Morioka. "Polarisation-insensitive parametric wavelength conversion without tunable filters for converted light extraction." Electronics Letters 42, no. 6 (2006): 365. http://dx.doi.org/10.1049/el:20064412.

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Gao, Lu, Kelvin H. Wagner, and Robert R. McLeod. "All-Optical Tb/S 3R Wavelength Conversion Using Dispersion-Managed Light Bullets." IEEE Journal of Selected Topics in Quantum Electronics 14, no. 3 (2008): 625–34. http://dx.doi.org/10.1109/jstqe.2008.921999.

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Inoue, K., and M. Yoshino. "Noise suppression effect in cascaded wavelength conversion using light-injected DFB-LDs." Electronics Letters 32, no. 23 (1996): 2165. http://dx.doi.org/10.1049/el:19961426.

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Cates, Ezra L., Stephanie L. Chinnapongse, Jae-Hyuk Kim, and Jae-Hong Kim. "Engineering Light: Advances in Wavelength Conversion Materials for Energy and Environmental Technologies." Environmental Science & Technology 46, no. 22 (2012): 12316–28. http://dx.doi.org/10.1021/es303612p.

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Rogers, Ariel, Isabelle I. Niyonshuti, Jun Ou, et al. "The Shape Modulation of Laser-Induced Nanowelded Microstructures Using Two Colors." Colloids and Interfaces 7, no. 4 (2023): 67. http://dx.doi.org/10.3390/colloids7040067.

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The light-based nanowelding of metallic nanoparticles is of particular interest because it provides convenient and controlled means for the conversion of nanoparticles into microstructures and the fabrication of nanodevices. In this study, we investigated the wavelength dependence of laser-induced nanowelded shapes of silver nanoparticles (AgNPs). We observed that the nanowelded microstructures illuminated with only a 405 nm laser were more branched than those formed via illumination using both the 405 nm and 532 nm lasers. We quantified this observation by two compactness descriptors and exam

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Xiao, Si, Yi Tan Gao, Xiu Qin Tian, and Jun He. "Characteristics Research of Gallium Arsenide Solar Cells under Femtosecond Laser Illumination." Advanced Materials Research 941-944 (June 2014): 575–79. http://dx.doi.org/10.4028/www.scientific.net/amr.941-944.575.

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Femtosecond laser with ultrashort pulse (≤35fs) is used to investigate the damage threshold and light-to-electric conversion efficiency of gallium arsenide solar cells. Different from nanosecond or picosecond lasers, the damage threshold of the solar cell illuminated by femtosecond laser is slightly higher than that under the illumination of continuous-waves laser with the same wavelength. Because the thermal non-equilibrium effect becomes obvious, heat conduction phenomenon no longer obeys the law of Fourier, when the heating pulse time of femtosecond laser is equal to or shorter than the ele

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