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Дисертації з теми "Laser device"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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1

Law, Clement K. "Semiconductor Laser Device-Level Characteristics." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/493.

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High-speed modulations of the semiconductor lasers are highly desirable in cost-effective optical communication systems. Developing the experimental setups to extract the characteristics of the semiconductor lasers is vital to the future of the optical research projects. In this thesis, integrated experimental setup designs have been developed to measure the characteristics of the Vertical Cavity Surface Emitting Laser (VCSEL), Distributed Feedback (DFB), and Fabry-Pérot (FP) lasers. The measurements of the DC characteristics are optical power versus drive current (L-I) curves (DFB, VCSEL)

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2

Raghavan, V. P. "High precision laser radar tracking device /." Online version of thesis, 1991. http://hdl.handle.net/1850/11453.

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3

Melena, Nicholas, Nicholas Neuenfeldt, Adam Slagel, Matthew Hamel, Charles Mackin, and Collin Smith. "Covert IR-Laser Remote Listening Device." Thesis, The University of Arizona, 2012. http://hdl.handle.net/10150/244475.

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This honors thesis details the performance, specifications, and process used in designing and building the Covert IR‐Laser Remote Listening Device (RLD.) In the interests of national security and law enforcement, it is some times necessary to perform covert surveillance of a target. The purpose of this product was to create an inexpensive, novel prototype capable of detecting and recording conversation from behind a window or within an automobile. Our final product utilizes window vibrations to deflect an infrared laser beam reflected off of the window surface. The deflections of this reflecte

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4

O'Shea, Patrick. "Simple and compact device for measuring ultrashort-laser pulses." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/30498.

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5

Hamid, Sohail. "Fibre linked miniature laser transit anemometer for complex flow fields." Thesis, Cranfield University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.352950.

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6

Gràcia, Julià Alvar. "Laser cooking system applied to a 3D food printing device." Doctoral thesis, Universitat Autònoma de Barcelona, 2019. http://hdl.handle.net/10803/667255.

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Se ha desarrollado un sistema innovador de cocción de alimentos basado en el calentamiento por radiación infrarroja (IR) mediante un láser de CO2 (IR Láser CO2) teniendo en cuenta que el agua posee una elevada capacidad de absorción electromagnética en la longitud de onda del IR Láser CO2. El sistema de cocción se ha adaptado en una impresora 3D de alimentos y se ha diseñado con los siguientes requerimientos: 1) cocción en un área delimitada; 2) capacidad de control de la temperatura de cocción; 3) las dimensiones físicas de la lámpara de CO2 deben adaptarse a la impresora 3D de alimentos; 4)

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7

Mackin, Charles, Nicholas Neuenfeldt, Matthew Hamel, Adam Slagel, Nicholas Melena, and Collin Smith. "Remote Listening Device: Creation of a Covert IR Laser Microphone." Thesis, The University of Arizona, 2012. http://hdl.handle.net/10150/244409.

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The goal of the project was to design and implement and laser-based remote listening device capable of covertly monitoring conversations taking place behind a reflective surface such a car or house window. The remote listening device design achieves this objective using an infrared laser and specular reflection at ranges exceeding twenty feet. The project was sponsored by Lockheed Martin Advanced Technology Center. Such covert monitoring devices are possess a number of defense related applications.

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8

Hnatenko, O. S., and V. B. Sivni. "Use of femtosecond lasers to encode information." Thesis, Sumy State University, 2019. http://openarchive.nure.ua/handle/document/8570.

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This paper proposes a method of coding information by changing two interfering femtosecond pulses.There is no secret that using femtosecond lasers it is possible to get supercontinuum, which implies a set of discrete closely spaced spikes of radiation decomposed in the frequency domain.

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9

Kilby, Gregory Robert. "Infrared Methods Applied to Photonic Crystal Device Development." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7156.

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Photonic crystal (PC) technology potentially offers lossless control of light propagation at a size scale near the order of the wavelength of light. The advantages and benefits of using such a technology in commercial devices are staggering. Yet, the commercial development of PC structures has been slow. Challenges associated with the repeatable fabrication and testing of structures has been identified as one cause of the slow development pace. To address these challenges, a development methodology that utilizes PC structures operating in the long-wavelength infrared is presented. One-dime

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10

Welsh, Gavin Alexander. "Evaluation of a laser fluorescence device for the detection of demineralisation." Thesis, University of Edinburgh, 2002. http://hdl.handle.net/1842/27640.

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The ability of the DIAGNOdent to detect and quantify enamel demineralisation in various laboratory created lesions was assessed and results indicated that the device was unable to reliably effect this. Comparison was made with another fluorescence based caries detection device which demonstrated a superior performance in this respect. The influence of exogenous staining on the DIAGNOdent analysis of the same laboratory created lesions was investigated and was found to have a profound effect on the instrument’s ability to detect and quantify the degree of demineralisation. Subsequent work, howe

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11

Phaneuf, Christopher. "Infrared laser-mediated polymerase chain reaction in a polymer microfluidic device." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53068.

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The ability to rapidly, sensitively, and accurately detect the presence of a pathogen is a vital capability for first responders in the assessment and treatment of scenarios such as disease outbreak and bioterrorism. Nucleic acid tests such as the polymerase chain reaction (PCR) are supplanting traditional techniques due to the improved speed, specificity, sensitivity, and simplicity. Still, amplification by PCR is often the bottleneck when processing genetic samples. Conventional PCR machines are bulky, slow, and consume large reagent volumes and an affordable, compact, efficient, easy-to-use

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12

Chenery, Simon Robert Neil. "Laser ablation microprobe as an injection device for analytical atomic spectrometry." Thesis, Imperial College London, 1991. http://hdl.handle.net/10044/1/46711.

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13

Mogg, Sebastian. "Long-Wavelength Vertical-Cavity Lasers : Materials and Device Analysis." Doctoral thesis, KTH, Microelectronics and Information Technology, IMIT, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3585.

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<p>Vertical-cavity lasers (VCLs) are of great interest as lightsources for fiber-optic communication systems. Such deviceshave a number of advantages over traditional in-plane laserdiodes, including low power consumption, efficient fibercoupling, on-chip testability, as well as potential low-costfabrication and packaging. To date, GaAs-based VCLs operatingat 850 nm are the technology of choice for short-distance,high-speed data transmission over multimode fiber. Forlong-distance communication networks, long-wavelength (LW) VCLsoperating in the 1.3 and 1.55-&#956m transmission windowsof standar

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14

Ghidini, Davide. "Accurate Portable Residual Stress ESPI Measurement Device." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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Анотація:

An Electronic Speckle Pattern Interferometer residual stress measurement device based on the hole-drilling technique was designed and built: by carefully design both the mechanical and the optical systems, it has been possible to achieve very nice measurement results, with a compact and cheap device, which promise great on-field capabilities but also large room for further improvement.

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15

Chern, Kevin Tsun-Jen. "Fabrication and Characterization of Narrow-Stripe Quantum Well Laser Diodes." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/34717.

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More efficient semiconductor lasers will be needed in tomorrowâ s applications. These lasers can only be realized through the application of new device processing techniques, designed to restrict current, carrier, and/or photon flow through the lasing cavity. This work aims to evaluate a non-conventional stripe laser processing technique which has the potential for effective current and possibly carrier confinement at low cost. This technique, referred to as hydrogen passivation, involves exposing laser material to a low energy hydrogen plasma, causing hydrogen ions to bind to charged accepto

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16

Wright, Derek A. "A novel laser structure and device geometry for investigating and improving the temperature characteristics of mid-infrared lasers." Thesis, Lancaster University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423556.

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17

Cerjan, Alexander Witte. "Fundamental physics and device design using the steady-state ab initio laser theory." Thesis, Yale University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3663625.

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<p> In this thesis we generalize and extend the steady-state <i>ab initio </i> laser theory (SALT), first developed by Türeci and Stone, and apply it problems in laser design. SALT as first formulated modeled the gain medium as identical two-level atoms, leading to the well-known Maxwell Bloch laser equations. The result is a set of coupled non-linear wave equations that treats the openness of the cavity exactly and the non-linear modal interactions to infinite order. Most gain media have more than two atomic levels, and in this thesis we generalize the SALT equations to treat realistic a

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18

Sorensen, Daniel David. "Dissimilar Metal Joining in the Medical Device Industry." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1494157928729494.

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19

Pope, James Edward. "Free will in device-independent cryptography." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:8d3ce92a-e9dc-4344-b5f3-8e68897d992c.

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Device-independent cryptography provides security in various tasks whilst removing an assumption that cryptographers previously thought of as crucial -- complete trust in the machinations of their experimental apparatus. The theory of Bell inequalities as a proof of indeterminism within nature allows for secure device-independent schemes requiring neither trust in the cryptographers' devices nor reliance on the completeness of quantum mechanics. However, the extreme paranoia attributable to the relaxed assumptions within device independence requires an explicit consideration of the previously

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20

Purcell, Cameron Paul. "A PMMA CONDUCTIVITY PRETREATMENT MICROFLUIDICS DEVICE FOR THE OPTIMIZATION OF ELECTROKINETIC MANIPULATIONS." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/538.

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This project encompasses the design and development of a pretreatment microfluidic device for samples of physiological conductivity, namely a saline solution. The conductivity was reduced through the combination of dilution and ion removal using electric fields to enable downstream electro kinetic manipulations. The two major parts of this project include (1) designing a pretreatment protocol to reduce the conductivity of the sample solution to an acceptable level and (2) designing /fabricating a microchip that will effectively allow aim (1) to be performed on chip. This project is one of the

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21

Betty, Ian Brian. "An experimental and theoretical determination of optical power backreflections within a semiconductor laser-modulator device." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0007/MQ28176.pdf.

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22

Akinapalli, Srikanth. "MICROFLUIDIC DYNAMIC ISOELECTRIC FOCUSING COUPLED TO MATRIX ASSISTED LASER DESORPTION/IONIZATION MASS SPECTROMETRY." OpenSIUC, 2016. https://opensiuc.lib.siu.edu/dissertations/1289.

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Proteomics is an increasingly important area of biological research and has gathered much attention over recent years. Major challenges that make a proteomic analysis difficult are sample complexity, diversity and dynamic range. Progress in the area of proteomics relies heavily on new analytical tools for the sensitive, selective, and high-throughput studies of target analytes. It is estimated that there are several hundred thousand proteins in a human cell. In order to be able to analyze such a complex sample, an analytical method must be capable of separating and detecting many differen

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23

Erdahl, Dathan S. (Dathan Shane). "Microelectronics Device Inspection System Implementation and Modeling for Flip Chips and Multi-Layer Ceramic Capacitors." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6902.

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Increased demand for smaller electronics is driving the electronic packaging industry to develop smaller, more efficient component level packages. Surface mounted components, such as flip chips, ball grid arrays (BGAs), and chip-scale packages (CSPs), are being developed for use in high-volume production. All of these technologies use solder bumps to attach the active silicon to the substrate, and traditional nondestructive methods such as machine vision, acoustic microscopy or x-ray inspection cannot easily find solder bump defects. Therefore, a system, consisting of an Nd:YAG laser that de

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24

Yu, Zhou. "Optical Properties of Deoxyribonucleic Acid (DNA) and Its Application in Distributed Feedback (DFB) Laser Device Fabrication." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1154706431.

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25

Corrado, Gaetano. "Design and optimization of a protection device for laser weld beads of metal alloys for aerospace applications." Doctoral thesis, Universita degli studi di Salerno, 2013. http://hdl.handle.net/10556/803.

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2011 - 2012<br>In the present thesis an automated laser welding apparatus was designed and developed in order to perform laser , that allows to achieve laser welding in a controlled, versatile, efficient, reliable, simple, and economical way. This system allows to shield not controlled from oxidation and nitriding process, both the melted pool and the material portion just after welding when the oxidation or nitriding critical temperatures, generally between 200 °C and 500 °C are still in place. Oxidation is even more serious when welding titanium, nickel superalloy, zirconium, molybdenum, sta

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26

Oliveira, Peter William. "Construção do dispositivo de onda acústica superficial (saw) e sua caracterização através da técnica do laser probe." Universidade de São Paulo, 1990. http://www.teses.usp.br/teses/disponiveis/54/54132/tde-13122013-153818/.

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Neste trabalho apresentaremos os procedimentos para a confecção de substratos de LiNbO3 para dispositivos OAS (Ondas Acústicas Superficiais). Assim como a construção de linhas de atraso, caracterização elétrica e pelo método de \"Laser Probe\". No procedimento experimental, inicialmente descreveremos os métodos e cuidados para a preparação dos substratos do monocristal de LiNbO3 produzido nos laboratórios do Grupo de Crescimento de Cristais do DFCM - IFQSC - USP. Para serem utilizados em linhas de atraso com freqüência central de operação de 70 MHz. Na segunda etapa, descreveremos a construçã

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27

Ayed, Alshammari Marji. "DESIGN OF HIGHER-ORDER ALL OPTICAL BINARY DELTA-SIGMA MODULATOR USING RING LASER." OpenSIUC, 2018. https://opensiuc.lib.siu.edu/dissertations/1619.

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The aim of this research is to investigate the performance of a bi-stable device using a single active element and to design a higher order all optical binary delta-sigma modulator (BΔΣM). A Delta sigma modulator has two important components that require enhancement to achieve robust modulation. The first component is the integrator which accumulates the error and at the same time leaks it. Here, the integrator is a single ring laser consisting of a semiconductor optical amplifier (SOA) and a filter to allow the light frequency of interest into the ring. The other component is the bi-stable de

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28

Himes, Benjamin John. "Development and Analysis of a Vibration Based Sleep Improvement Device." BYU ScholarsArchive, 2020. https://scholarsarchive.byu.edu/etd/9168.

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Many research studies have analyzed the effect that whole-body vibration (WBV) has on sleep, and some have sought to use vibration to treat sleep disorders such as insomnia. It has been shown that low frequencies (f < 2Hz) are generally sleep inducing, but oscillations of this frequency are typically difficult to achieve using electromagnetic vibration drives. In the research that has been performed, optimal vibration parameters have not been determined, and the effects of multiple vibration sources vibrating at different frequencies to induce a low frequency traveling wave have not been explo

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29

Hood, Robert L. "Development of a Fiberoptic Microneedle Device for Simultaneous Co-Delivery of Fluid Agents and Laser Light with Specific Applications in the Treatment of Brain and Bladder Cancers." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/51678.

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This dissertation describes the development of the fiberoptic microneedle device (FMD), a microneedle technology platform for fluid and light delivery, from general engineering characterization to specific applications in treating bladder and brain cancers. The central concept of the FMD is physical modification of silica fiberoptics and capillary tubes into sharp microneedles capable of penetrating a tissue's surface, enabling light and fluid delivery into the interstitial spaces. Initial studies sought to characterize the mechanical penetration and optical delivery of multimode fiberoptics a

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30

Palai, Ratnakar. "Growth, optimisation and characterisation of pulsed laser deposited Nd-based high temperature superconducting thin films for device applications." Thesis, University of Strathclyde, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.405145.

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31

Li, Chongguang. "Study of an optical device for homogenizing a laser beam and simulation of temperature field in irradiated materials." Lyon, INSA, 2006. http://www.theses.fr/2006ISAL0079.

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In the experiment to measure directional spectral emissivity of semitransparent materials at high temperature (around 2000°C), an infrared CO2 laser beam with the wavelength of 10. 6µm was used as a heating source. From the knowledge of semitransparent materials, the key requirement of the experiment is to obtain a uniform temperature distribution in a specimen, because the appreciable transmission of this material for radiation in certain spectral regions will give rise to the phenomenon of volume emission when the sample is heated. Accordingly a homogeneous laser beam is required to heat spe

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32

Miller, Michael A. Weitekamp Daniel P. "Laser synchronized optical nuclear magnetic resonance via Larmor beat detection : imaging electronic wavefunctions in gallium arsenide device structures /." Diss., Pasadena, Calif. : California Institute of Technology, 2001. http://resolver.caltech.edu/CaltechETD:etd-12102007-114331.

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33

Millichope, Allen John. "Application of a charge coupled device Raman microscope imaging system for quantitative analysis of aqueous surfactant phases." Thesis, Liverpool John Moores University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327678.

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34

Carlier, Sylvain. "Etude d'un vidéoprojecteur laser à balayage simultané de plusieurs lignes." Valenciennes, 1985. https://ged.uphf.fr/nuxeo/site/esupversions/54e6f9f8-b35f-4aa4-9e31-3cc8e14b93b9.

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Le problème le plus critique est le balayage horizontal du faisceau module car il s'effectue a une cadence très rapide. Si le miroir polygonal en rotation fournit une réponse satisfaisante pour projeter une image de définition standard, il représente une solution difficilement transposable pour une image de haute définition. On propose une propagation simultanée de plusieurs lignes, réduisant d'autant la vitesse du miroir. La modulation simultanée de plusieurs faisceaux lumineux peut être obtenue par un modulateur acoustoptique recevant un signal électrique multifréquences, chaque porteuse cor

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35

Subka, Samiya. "Validity and acceptability of a laser fluorescence device compared to conventional methods for detection of proximal caries in primary teeth." Thesis, University of Sheffield, 2015. http://etheses.whiterose.ac.uk/9481/.

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Aim: Accurate detection and diagnosis of caries in primary molars is challenging, especially for proximal lesions where direct visual examination is difficult. Therefore, the aim of this in-vivo and in-vitro study was to assess the validity, reproducibility and acceptability of a laser fluorescence pen and compare these outcomes with those of conventional methods of proximal caries detection in primary molar teeth. Methods: Eighty-two children (aged 5-10 yrs) were recruited. Initially 1030 proximal surfaces were clinically examined using meticulous visual examination (ICDAS), bitewing radiogra

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36

Michel, David Daniel. "Linear-cavity tunable fibre lasers employing an Opto-VLSI processor and a MEMS-based device." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2012. https://ro.ecu.edu.au/theses/520.

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This thesis proposes and demonstrates experimentally two novel linear-cavity tunable fibre lasers employing an erbium-doped fibre (EDF) in conjunction with an Opto- VLSI processor and a MEMS-based device for wavelength selection. The Opto-VLSI processor and the MEMS-based device along with an optical collimator, a Bragg grating plate and an optical lens, enable the realisation of an optical filter for continuous tuning of wavelengths over the amplified spontaneous emission (ASE) range of the EDF. We also propose the use of a section of un-pumped EDF as a saturable absorber (SA), which suppress

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37

Andersson, Harald. "Numerical and experimental study of confluent jets supply device with variable airflow." Licentiate thesis, Högskolan i Gävle, Energisystem och byggnadsteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-29271.

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In recent years, application of confluent jets for design of ventilation supply devices has been studied. Similarly, numerus studies have been made on the potential and application of variable air volume (VAV) in order to reduce the energy demand of ventilation systems. This study investigates the combination of supply devices based on confluent jets and VAV, both in terms of the nearfield flow behavior of the device and the impact on thermal comfort, indoor air quality and energy efficiency on a classroom-level space when the airflow rate is varied. The method used in this study is an experim

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38

Maslah, Zouhir. "Élastographie in vitro de cellules par opto-acoustique picoseconde : applications à la différenciation cellulaire." Electronic Thesis or Diss., Bordeaux, 2023. http://www.theses.fr/2023BORD0464.

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Анотація:

La mécanique cellulaire est impliquée dans de nombreux processus biologiques tels que l'adhésion, la migration ou la différenciation. Évaluer les propriétés mécaniques des éléments cellulaires est essentiel pour comprendre leur fonction dans ces processus et permet d'anticiper les perturbations en cas d'altérations pathologiques. Cependant, les techniques traditionnellement utilisées pour caractériser mécaniquement les cellules ne permettent pas d’éliminer les interactions entre les différents éléments cellulaires lors des mesures. L’acoustique picoseconde offre une nouvelle opportunité grâce

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39

Rušar, Filip. "Univerzální úsťové zařízení na útočnou pušku." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318834.

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This diploma thesis deals with the design of a universal muzzle device for the assault rifle. The device is designed to produce Selective Laser Melting. The main objective is the elimination negative effects of gunshot. The paper explores possibilities of using porous structures for this type of equipment. The influence of individual types of porous structures on the flow of gases is monitored. The universal muzzle device itself is optimized using CFD analyzes. The device was made using SLM technology and experimentally verified. His impact on the impact, gun lift, noise and flame elimination

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40

Lahyaoui, Otmane. "Contribution to the study of magnetostrictive energy conversion : from material to device." Thesis, Compiègne, 2019. http://www.theses.fr/2019COMP2472.

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Dans cette ère du tout électrique, la demande en technologie électrique est en nette augmentation dans plusieurs secteurs (automobile, ferroviaire et aéronautique). Malheureusement, le bruit et les vibrations d’origine magnétiques provenant de ces technologies restent une problématique préoccupante dans ces moyens de transports, perturbant ainsi le confort des passagers. Sachant que le fonctionnement de ces dispositifs électriques comme les moteurs, les générateurs, les transformateurs repose en grande partie sur les matériaux ferromagnétiques, les principales sources d’émission acoustiques so

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Tsiminis, Georgios. "One- and two-photon pumped organic semiconductor lasers." Thesis, University of St Andrews, 2010. http://hdl.handle.net/10023/927.

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This thesis describes a number of studies on organic semiconductors focused around using them as gain media for lasers. The photophysical properties of organic semiconductors are studied using a wide range of experimental techniques, allowing the evaluation of new materials and novel excitation schemes for use in organic semiconductor lasers. Polyfluorene is a well-established conjugated polymer laser gain medium and in this thesis its excellent lasing properties are combined with its two photon absorption properties to demonstrate a tunable two-photon pumped solid-state laser based on a comme

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42

Belica, Martin. "Vývoj univerzálního softwarového rozhraní pro detekční jednotky v optické spektroskopii." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413006.

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This master's thesis deals with the design and implementation of universal user interface for detection devices used in Laser-induced breakdown spectroscopy. The design and implementation are based on analysis of current state of instrumentation used in laser spectroscopy. The user interface should be able to work with high repetition frequency of measurement. Acquired spectra should be visualised to user and it is also necessary to save this data on hard drive. The resulting application must be universal. It means the application must support various types and vendors of detection devices.

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Khan, Tania Nur. "Design and performance of a localized fiber optic, near-infrared spectroscopic prototype device for the detection of the metabolic status of "ulnerable Plaque" in-vitro investigation of human carotid plaque." Link to electronic thesis, 2003. http://www.wpi.edu/Pubs/ETD/Available/etd-0108103-162630.

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Lavvafi, Hossein. "EFFECTS OF LASER MACHINING ON STRUCTURE AND FATIGUE OF 316LVM BIOMEDICAL WIRES." Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1352743353.

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Perera, Janaka P. "A low-cost man-portable free-space optics communication device for Ethernet applications." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Dec%5FPerera.pdf.

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Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, December 2004.<br>Thesis advisor(s): Gamani Karunasiri, Xiaoping Yun. Includes bibliographical references (p. 47-50). Also available online.

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Hangauer, Andreas Verfasser], Markus-Christian [Akademischer Betreuer] [Amann, and Maximilian [Akademischer Betreuer] Fleischer. "Detection schemes, algorithms and device modeling for tunable diode laser absorption spectroscopy / Andreas Hangauer. Gutachter: Markus-Christian Amann ; Maximilian Fleischer. Betreuer: Markus-Christian Amann." München : Universitätsbibliothek der TU München, 2013. http://d-nb.info/1037820614/34.

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Nguyen, The Quyen. "Mise au point d'un nouveau type de spectromètre Raman basé sur l'utilisation d'un DMD, à vocation industrielle." Châtenay-Malabry, Ecole centrale de Paris, 2007. http://www.theses.fr/2007ECAP1031.

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Dans ce travail, nous avons montré la faisabilité du spectromètre Raman de nouvelle génération utilisant un DMD comme modultateur de lumière couplé avec un PM comme détecteur. Le spectromètre donne des résultts très prometteurs pour des analyses qualitatives et quantitaves. Pour les analyses qualitatives il suffit d'une seconde pour identifier un constituant dun mélange. Pour les analyses quantitatives, malgré la présence éventuelle de fluorescence dans les échantillons, les tests effectués sur des mélanges binaires et terniaires de xylènes ont montré qu'on arrive à des erreurs de prédiction d

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Chen, Ruiqi. "Investigation of nonlinear processes and device designs applicable to the creation of a compact, broadly tunable laser based on a tantalum pentoxide planar lightwave circuit platform." Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/171819/.

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Nonlinear photonic devices utilize phase-matched parametric wavelength conversion in a nonlinear medium to create a widely tunable pulsed laser source. Currently most of nonlinear lasers are based on bulk optics or photonic fibres. Lasers based on bulk optics utilizing nonlinear crystals in conjunction with high intensity pulsed laser pumps, which are very powerful and often used as pump lasers for nonlinear experiments, but they are very large in size, and expensive to purchase. Although marketed as ‘turn key’ solutions, they require expert alignment, are difficult to use and are not suitable

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Aspe, Barthélémy. "Développement de couches minces ferroélectriques sans plomb et intégration dans des antennes miniatures reconfigurables." Thesis, Rennes 1, 2019. http://www.theses.fr/2019REN1S037/document.

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L'intégration d'oxydes ferroélectriques permet la réduction des dimensions de dispositifs électroniques pour des applications en télécommunications, tout en leur apportant la reconfigurabilité. Parmi ces matériaux multifonctionnels, KxNa1-xNbO3 (KNN) se présente comme un candidat oxyde sans plomb prometteur pour un grand nombre d'applications. L'objectif de cette thèse est l'élaboration de couches minces de KNN et l'étude de leurs propriétés diélectriques en hyperfréquences en vue de leur intégration dans des antennes miniatures et reconfigurables. La permittivité εr, les pertes tanδ et l'agil

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Mechref, Elias. "Synthèse, caractérisation et mise en œuvre d’un matériau hybride organique-inorganique photosensible de type résine positive : application à la fabrication de dispositifs de microfuidique par écriture Laser." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS071.

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Depuis quelques décennies, les matériaux composites organique/inorganique font l’objet de nombreux travaux de recherches. En raison de leurs propriétés uniques et intermédiaires entre les deux mondes minérales et organiques, ces matériaux sont d’un grand intérêt pour des nombreuses applications tel que le domaine, d’optique, la microfluidique, la microélectronique…, La synthèse de ce type des matériaux est réalisée à moindre coût en deux étapes : La synthèse du réseau inorganique est effectué par procédé sol-gel , tant qu’à la partie organique des compositions de type résines négatives et posi

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