Global ETD Search
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Showing 1 to 5 of 5 for “"photorefractive materials"”.
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Gravitational effects on defect formation in melt grown photorefractive materials : bismuth silicate
… Bismuth Silicate, Bi12SiO20, (BSO) is a photorefractive material with outstanding properties including a fast response time and high sensitivity is studied. Its photorefractivity is due to a native defect whose exact nature and origin have not been unambiguously determined. Motivation for …
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Photorefractives for fast optics
… the nonlinear optical<br/>properties of novel photorefractive materials and devices. The focus of the work is<br/>centred on bringing together the attractive attributes of inorganic and organic<br/>materials in a single hybrid device and to increase the photorefractive effect that …
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Picosecond Dynamics of Free-Carrier Populations, Space-Charge Fields, and Photorefractive Nonlinearities in Zincblende Semiconductors
… to spectroscopy or device fabrication. The photorefractive effect is a nonlinear optical effect that occurs in solids, where transport of an optically-induced free-carrier population results in an internal space-charge field, which produces an index change via the linear electrooptic effect. …
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Energy transfer between surface plasmon polariton modes with hybrid photorefractive liquid crystal cells
In this thesis, a hybrid photorefractive liquid crystal cell structure with the addition of a thin 40nm Gold layer is proposed that demonstrates significant photorefractive control of Surface Plasmon Polaritons (SPP). The photorefractive effects are generated through optically controlling the …
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Nonlinear optical studies of dye-doped nematic liquid crystals
… different types in the samples, and to study the photorefractive and the orientational responses of these samples. Furthermore, we tried to explain and model the dynamical behaviors of the observed grating formations. The experimental techniques employed in this study include asymmetric two-beam …