期刊
PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER
卷 65, 期 -, 页码 71-80出版社
E M W PUBLISHING
DOI: 10.2528/PIER06062605
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Geometry of grating structure has been analyzed to maximize electromagnetic energy deposition onto the active region of a silicon photodetector. The concept of Brewster angle to minimize reflection from the grating surface and a differences-in-time technique to focus incoming electromagnetic radiation on the substrate has been applied to optimize the grated structure that amplifies transmitted energy through grating-substrate interface. The computed electric field at the interface for the new grating geometry has been found to be approximately 1.5 times higher than that of a square-shape gratings reported earlier. Also the average power depositions and electric field distributions on the grating-substrate interfaces have been studied which revealed the superiority of the proposed optimum structure.
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