Дисертації з теми "Mid-infrared light"
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Mirza, Benjamin Imran. "Mid-infrared INSb/A1InSb light-emitting diodes." Thesis, University of Bristol, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.503928.
Повний текст джерелаGevaux, David Graham. "Spectroscopic study of mid-infrared light emitting diodes." Thesis, Imperial College London, 2003. http://hdl.handle.net/10044/1/8253.
Повний текст джерелаNshii, Chidi Christopher. "Tunable mid-infrared light sources based on intersubband transitions." Thesis, University of Glasgow, 2011. http://theses.gla.ac.uk/2603/.
Повний текст джерелаMannheim, Volker Paul. "The characterisation and evaluation of mid-infrared, light-emitting diodes." Thesis, Heriot-Watt University, 1998. http://hdl.handle.net/10399/652.
Повний текст джерелаBatty, Peter James. "Characterisation of 5-component alloys for mid-infrared light emitting diodes." Thesis, Lancaster University, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.543966.
Повний текст джерелаHayton, Jonathan Paul. "Development of mid-infrared light emitting diodes to replace incandescent airfield lighting." Thesis, Lancaster University, 2017. http://eprints.lancs.ac.uk/86080/.
Повний текст джерелаMeriggi, Laura. "Antimonide-based mid-infrared light-emitting diodes for low-power optical gas sensors." Thesis, University of Glasgow, 2015. http://theses.gla.ac.uk/6691/.
Повний текст джерелаKoerperick, Edwin John Boggess Thomas F. Prineas John P. "High power mid-wave and long-wave infrared light emitting diodes device growth and applications /." Iowa City : University of Iowa, 2009. http://ir.uiowa.edu/etd/304.
Повний текст джерелаHardaway, Harvey Royston. "Spectroscopic studies of InAs/InAsSb heterostructure light-emitting diodes for the mid-infrared region." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322199.
Повний текст джерелаVigneron, Pierre-Baptiste. "Mid-Infrared Detectors and THz Devices Operating in the Strong Light-Matter Coupling Regime." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS082/document.
Повний текст джерелаAfter fifteen years of intersubband polaritons development some of the peculiar properties of these quasi-particles are still unexplored. A deeper comprehension of the polaritons is needed to access their fundamental properties and assess their applicative potential as efficient emitters or detectors in the mid-infrared and THz.In this manuscript we used Metal-Insulator-Metal (MI-M) cavities with a top metal periodic grating as a platform to deepen the understanding of ISB polaritons.The advantages of M-I-M are twofold : first they confine the TM00 mode, second the dispersion of the cavity -over a large set of in-plane wave-vectors- offers various experimental configurations to observe the polaritons in both reflection and photo-current. We reexamined the properties of ISB polaritons in the mid-infrared and in the THz using these resonators. In the first part, we explore the implementation of dispersive M-I-M cavities with THz intersubband transitions. In the THz domain, the scattering mechanisms of the THz ISB polaritons need to be understood. The dispersive cavity is a major asset to study these mechanisms because it provides more degrees of freedom to the system. For this purpose, we fabricated a new experimental set-up to measure the polariton dispersion at liquid Helium temperature. After the characterization of the polaritons in reflectivity, a pump-probe experiment was performed on the polaritonic devices. The second part of this manuscript presents the implementation of M-I-M dispersive cavities with abound-to-quasi-bound quantum well infrared photo detector designed to detect in strong coupling. Beyond electrical probing of the polaritons, the strong coupling can disentangle the frequency of detection from the thermal activation energy and reduce the dark current at a given frequency. In parallel to the exploration of THz polaritons, we developed two techniques (Gires-Tournois Interferometer and Anti-reflection coating) in order to shorten the pulses of THz quantum cascade lasers with metal-metal waveguides
Krier, Susan Elaine. "Light sources for the mid-infrared spectral region based on narrow gap III-V alloys." Thesis, Lancaster University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.404257.
Повний текст джерелаKoerperick, Edwin John. "High power mid-wave and long-wave infrared light emitting diodes: device growth and applications." Diss., University of Iowa, 2009. https://ir.uiowa.edu/etd/304.
Повний текст джерелаChick, Steven. "Coherent control of spin and orbital wavepackets of donors in silicon using mid-infrared and terahertz light." Thesis, University of Surrey, 2017. http://epubs.surrey.ac.uk/813174/.
Повний текст джерелаChaitanya, Kumar Suddapalli. "High-power, fiber-laser-pumped optical parametric oscillators from the visible to mid-infrared." Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/83528.
Повний текст джерелаFuentes coherentes de luz continua y de alta potencia en el infrarrojo-medio (mid-IR) son de gran interés por su aplicación en la detección de gases, detección remota y la observación de imágenes. Estas aplicaciones requieren un ancho de banda amplio para evidenciar las características que ofrece la absorción de una gran variedad de especies moleculares, particularmente en la región “finger print” del mid-IR. Por otra parte, fuentes altamente energéticas con pulsos que posean estructuras peculiares en rangos específicos de longitud de onda en el mid-IR, entre 6-6.5 m. , prometen características únicas para nuevas aplicaciones en cirugía. Osciladores ópticos paramétricos (OPOs) constituyen fuentes de luz versátiles y apropiadas para todas las aplicaciones mencionadas anteriormente. La longitud de En el régimen ultrarápido, hemos demostrado una nueva técnica de interferometría para la optimización absoluta de la potencia de salida de un oscilador óptico con una cavidad de anillo. Como demostración de principio, implementamos, por primera vez, un OPO de picosegundos en el mid-IR basado en MgO:PPLN con una cavidad de anillo bombeado por un láser de fibra de Yb. Además, hemos desarrollado un nuevo OPO de alta energía en el mid-IR basado en el material nolineal CSP. Esto representa la primera demostración de un OPO compacto de alta repetición sincrónicamente bombeado por un láser de estado sólido a 1064 nm generando pulsos de milijulios en el rango espectral 6-6.5 m. Esta radiación es importante para aplicaciones en cirugía. Adicionalmente, hemos demostrado una fuente verde, 532 nm, basada en láseres de fibra. Esta radiación se obtiene por medio de la generación de segundo harmónico (SHG) en un paso individual en MgO:sPPLT. Esto representa una nueva alternativa de bombeo para los láseres de Ti:sapphire que los harán compactos en el futuro. Los esfuerzos para mejorar la eficiencia de segundo harmónico resultaron en el desarrollo de un novedoso esquema que utiliza múltiples cristales y permite eficiencias de SHG de paso individual del 56%. Este esquema es general y simple y puede ser implementado para cualquier longitud de onda. onda de un OPO puede ser sintonizada en regiones amplias del espectro cambiando la temperatura del cristal no-lineal, el ángulo de ajuste de fase o, al considerar materiales cuasi ajuste de fase (QPM), cambiando el periodo de red. En esta tesis, hemos demostrado una gran variedad de OPOs en el mid-IR en régimen continuo y de pulsos de picosegundo. Estos OPOs han sido bombeados por láseres de fibra permitiendo un diseño compacto y resistente. En el régimen de emisión continua, hemos implementado un OPO de alta potencia basado en MgO:PPLN bombeado por un láser de fibra. Este OPO es sintonízable en el rango 1506-1945 nm correspondiente al infrarrojo-cercano y en el rango 2304-3615 nm correspondiente al mid-IR. Esta capacidad de sintonización se logra al sobrepasar eficientemente los efectos térmicos optimizando el acoplamiento de salida. Materiales nuevos como el MgO:sPPLT, con propiedades ópticas y térmicas mejoradas para la generación de radiación continua en el mid-IR han sido estudiados. Utilizando las propiedades ajuste de la fase extendió del MgO:sPPLT, fuentes continuas de alta potencia con un gran ancho de banda en el infrarrojo-medio también han sido implementadas.
Norton, Dennis Thomas Jr. "Type-II InAs/GaSb superlattice LEDs: applications for infrared scene projector systems." Diss., University of Iowa, 2013. https://ir.uiowa.edu/etd/5031.
Повний текст джерелаMennesson, Bertrand, Denis Defrère, Matthias Nowak, Philip Hinz, Rafael Millan-Gabet, Olivier Absil, Vanessa Bailey, et al. "Making high-accuracy null depth measurements for the LBTI exozodi survey." SPIE-INT SOC OPTICAL ENGINEERING, 2016. http://hdl.handle.net/10150/622531.
Повний текст джерелаProvence, Sydney R. "Next generation mid-wave infrared cascaded light emitting diodes: growth of broadband, multispectral, and single color devices on GaAs and integrated circuits." Diss., University of Iowa, 2016. https://ir.uiowa.edu/etd/5827.
Повний текст джерелаWheatley, Robert Alistair. "Growth and characterisation of strained InGaAsN and InAsN type 1 multi quantum wells for mid infrared light sources based on InP." Thesis, Lancaster University, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.742533.
Повний текст джерелаMendonça, Marcela de Freitas. "Projeto e construção de um amplificador paramétrico óptico operando no infravermelho médio." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-14062010-162036/.
Повний текст джерелаAn Optical Parametric Amplifier (OPA) is a tunable light source of high quality, coherent radiation, based on second-order nonlinear optical processes. Some models have a narrow spectral bandwidth and a tuning range from the ultraviolet to the mid-infrared. The motivation for building this optical parametric amplifier is its use in vibrational spectroscopy of surfaces by a second-order nonlinear optical process, sum-frequency generation (SFG), which is a technique that requires tunable sources in the mid-infrared with narrow bandwidth and high peak intensities. The purpose of this work is to design, implement and test an OPA to generate tunable high energy pulses tuneable in the mid-infrared (λ ~ 2.5 to 10 μm) from a pumping laser that provides 25 ps pulses with high energy at λ = 1064 nm. For an efficient mid-infrared generation, we propose an innovative design for picosecond parametric amplifiers, using the near infrared portion of a white-light supercontinuum pulse as the seed beam for the parametric amplifier. The pump pulse (λ = 1064 nm) is divided into two parts: the first one, with lower energy, generates a high spectral width pulse in the near infrared (white-light supercontinuum picosecond pulse). A spectral fraction of this pulse is selected through a monochromator and is used as seed for the parametric amplification stage. The second part of the laser beam pumps the parametric amplifier crystal (silver gallium sulfide, AgGaS2) which simultaneously amplifies the tunable seed beam in the near infrared and generates a new pulse with complementary frequency in the mid-infrared. Several media were tested for supercontinuum generation, but the best results were obtained with a 10 cm long cuvette with a mixture of water and deuterated water (3 % volume of H2O in D2O) and with a 2 m long nonlinear photonic crystal fiber. Using the supercontinuum as a seed beam, we have obtained parametric amplification of the seed generated by the photonic fiber with a gain of 260 times, but not of the beam generated by the water mixture, presumably because of its significantly higher instability.
Yin, Jian. "Novel optoelectronic devices for mid-infrared applications: from intersubband thermophotovoltaic detectors to Germanium nanomembrane light emitters." Thesis, 2016. https://hdl.handle.net/2144/14635.
Повний текст джерела2016-08-17T00:00:00Z
Bennett, Agatha Karen. "The design of anti-reflective coatings for a quantum cascade laser emitting light in the mid-infrared range." 2013. http://hdl.handle.net/2152/22627.
Повний текст джерелаtext