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Full-Text Articles in Optics
Measuring And Utilizing High-Dimensional Information Of Optical Fields, Ziyi Zhu
Measuring And Utilizing High-Dimensional Information Of Optical Fields, Ziyi Zhu
USF Tampa Graduate Theses and Dissertations
Currently, many areas of optical techniques including imaging, inspection and communication emphasize the utilization of the high-dimensional information encoded in optical fields. There is also a requirement for novel measurement techniques to extract this high-dimensional information with high-speed and accuracy. We firstly introduce a scan-free direct measurement technique that is capable of simultaneously characterizing the amplitude and phase of a coherent scalar optical field. Our direct measurement approach is constituted of a weak polarization perturbation which is followed by the recording of a polarization-resolving imaging process. The weak perturbation rotates the linear polarization on the spatial frequency domain of the …
Application Of Metamaterials To Rf Energy Harvesting And Infrared Photodetection, Clayton M. Fowler
Application Of Metamaterials To Rf Energy Harvesting And Infrared Photodetection, Clayton M. Fowler
USF Tampa Graduate Theses and Dissertations
Techniques for adapting metamaterials for the improvement of RF energy harvesting and infrared photodetection are demonstrated using experimental and computer simulation methods. Two methods for RF energy harvesting are experimentally demonstrated and supported by computer simulation. In the first method, a metamaterial perfect absorber (MPA) is made into a rectenna capable of harvesting RF energy and delivering power to a load by soldering Schottky diodes onto connected split ring resonator (SRR) structures composing the planar metasurface of the perfect absorber. The metamaterial rectenna is accompanied by a ground plane placed parallel to it, which forms a Fabry-Perot cavity between the …