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- W4298857669 abstract "An ultrabroadband upconversion device is demonstrated by direct tandem integration of a p-type GaAs/AlxGa1-xAs ratchet photodetector (RP) with a GaAs double heterojunction LED (DH-LED) using the molecular beam epitaxy (MBE). An ultrabroadband photoresponse from terahertz (THz) to near infrared (NIR) region (4-200 THz) was realized that covers a much wider frequency range com-pared with the existing upconversion devices. Broadband IR/THz radiation from 1000 K blackbody is successfully upconverted into NIR photons which can be detected by commercial Si-based device. The normal incidence absorption of the RP simplifies the structure of the RP-LED device and make it more compact compared with the inter-subband transition based upconverters. In addition to the up-conversion function, the proposed upconverter is also tested as photovoltaic detectors in the infrared region (15-200 THz) without an applied bias voltage due to the ratchet effect." @default.
- W4298857669 created "2022-10-02" @default.
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- W4298857669 date "2021-09-10" @default.
- W4298857669 modified "2023-09-29" @default.
- W4298857669 title "Ultrabroadband THz/IR upconversion and photovoltaic response in semi-conductor ratchet based upconverter" @default.
- W4298857669 doi "https://doi.org/10.48550/arxiv.2109.05166" @default.
- W4298857669 hasPublicationYear "2021" @default.
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