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Deposition of Indium Tin Oxide and study of its optical properties
Olivíková, Gabriela ; Kvapil, Michal (referee) ; Dvořák, Petr (advisor)
This work is focused on preparation and deposition of thin layers of indium tin oxide (ITO) by ion beam sputtering (IBS) and ion beam assisted deposition (IBAD). In the theoretical part, the electrical and optical properties, preparation methods, and applications are reviewed. In the experimental part, the optical and transport properties of deposited films are investigated by spectroscopic methods. It is shown that simultaneous bombardment of the surface with oxygen ions with energy 80 eV results in increase of transmittance in the visible range of spectrum. IBAD thus confirmed as a suitable method for modification of optical properties.
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Quantum description of superradiance of emitters with plasmon-mediated interaction
Olivíková, Gabriela ; Chvátal, Lukáš (referee) ; Křápek, Vlastimil (advisor)
Superradiance is an enhanced decay of an excited system of emitters resulting from their mutual coupling. This thesis is focused on superradiance of the emitters coupled via their interaction with a plasmonic nanoparticle. So-called plasmon-mediated superradiance results in even stronger enhancement of the decay rate as the nanoparticle serves as an additional decay chanel. We have developed a quantum model of the system of emitters coupled to a plasmonic nanoparticle, which allows us to differentiate between a pure dephasing and decay processes. We show that the pure dephasing can destroy the cooperative effect leading to superradiance. Furthermore, we have studied how the direct mutual coupling between emitters affects time evolution of the system in dependence on its configuration, and we show conditions when a decay of the system is dramatically decreased by direct coupling.
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Quantum description of superradiance of emitters with plasmon-mediated interaction
Olivíková, Gabriela ; Chvátal, Lukáš (referee) ; Křápek, Vlastimil (advisor)
Superradiance is an enhanced decay of an excited system of emitters resulting from their mutual coupling. This thesis is focused on superradiance of the emitters coupled via their interaction with a plasmonic nanoparticle. So-called plasmon-mediated superradiance results in even stronger enhancement of the decay rate as the nanoparticle serves as an additional decay chanel. We have developed a quantum model of the system of emitters coupled to a plasmonic nanoparticle, which allows us to differentiate between a pure dephasing and decay processes. We show that the pure dephasing can destroy the cooperative effect leading to superradiance. Furthermore, we have studied how the direct mutual coupling between emitters affects time evolution of the system in dependence on its configuration, and we show conditions when a decay of the system is dramatically decreased by direct coupling.
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Deposition of Indium Tin Oxide and study of its optical properties
Olivíková, Gabriela ; Kvapil, Michal (referee) ; Dvořák, Petr (advisor)
This work is focused on preparation and deposition of thin layers of indium tin oxide (ITO) by ion beam sputtering (IBS) and ion beam assisted deposition (IBAD). In the theoretical part, the electrical and optical properties, preparation methods, and applications are reviewed. In the experimental part, the optical and transport properties of deposited films are investigated by spectroscopic methods. It is shown that simultaneous bombardment of the surface with oxygen ions with energy 80 eV results in increase of transmittance in the visible range of spectrum. IBAD thus confirmed as a suitable method for modification of optical properties.
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