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- W2208851038 abstract "Microbolometers are the most widely used detectors in long-wave infrared uncooled thermal imagers. An optical cavity is required within a microbolometer structure to increase its optical absorption. In this work we present a detailed study on the design and optimization of a microbolometer optical cavity using Essential-Macleod package. In the simulations, the cavity is considered as thin film multi-layers that form cascaded Fabry-Perot optical cavities. In the design phase, the layers structures are selected including materials and initial thickness. The absorbing layers are chosen to be vanadium-pentoxide (V2O5) and titanium (Ti). In the optimization phase, the designed layer thicknesses are varied to maximize optical absorption within the absorbing layers. The simulations show that Ti layer absorption dominates over V2O5 layer. Also, the optimization proves that the air-gap cavity thickness is not simply quarter-wavelength because of the complex cascaded Fabry-Perot structure. The optimized air-gap thi..." @default.
- W2208851038 created "2016-06-24" @default.
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- W2208851038 date "2015-04-01" @default.
- W2208851038 modified "2023-09-26" @default.
- W2208851038 title "Design and Optimization of Microbolometer Multilayer Optical Cavity" @default.
- W2208851038 cites W574125501 @default.
- W2208851038 doi "https://doi.org/10.12693/aphyspola.127.1295" @default.
- W2208851038 hasPublicationYear "2015" @default.
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