NIR/LWIR dual-band infrared photodetector with optical addressing
Autor: | Heung Soo Kim, Yong-Hang Zhang, John L. Reno, Oray Orkun Cellek |
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Rok vydání: | 2012 |
Předmět: |
Physics
Physics::Instrumentation and Detectors business.industry Infrared Near-infrared spectroscopy Detector Multispectral image Photodetector Astrophysics::Cosmology and Extragalactic Astrophysics Wavelength Optics Far infrared Optoelectronics Multi-band device business Astrophysics::Galaxy Astrophysics |
Zdroj: | SPIE Proceedings. |
ISSN: | 0277-786X |
Popis: | A near infrared (NIR) and long-wavelength infrared (LWIR) dual-band infrared photodetector, which can switch detection bands with light bias, is demonstrated at 77 K. The demonstrated scheme consists of series connected photodetectors for different bands. The basic operating principle of the scheme is that without light bias, shorter wavelength detector limits the total current and thus the device operates in NIR mode. With light bias on the NIR detector, the LWIR detector becomes the current limiting device and the device then operates in LWIR mode. Proposed design allows single indium-bump per pixel focal plane arrays, and in principle allows covering all tactical bands such as UV, visible, NIR, SWIR, MWIR and LWIR bands with a single pixel. |
Databáze: | OpenAIRE |
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