Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system
Patent
1996-11-15
1998-09-22
Glick, Edward J.
Radiant energy
Invisible radiant energy responsive electric signalling
Semiconductor system
2503384, H01L 2714, H01L 3109
Patent
active
058118152
ABSTRACT:
A dual-band detector that absorbs incident radiation in a first range of wavelengths and that absorbs incident radiation in a second range of wavelengths. The dual-band detector includes a semiconductor substrate and a first microbridge detector level disposed above the semiconductor substrate. The first microbridge detector level includes an active area that absorbs incident radiation in one of the first range of wavelengths and the second range of wavelengths. In one embodiment, the semiconductor substrate includes a detector that detects incident radiation in the other of the first and second range of wavelengths. In another embodiment, the dual-band microbridge detector also includes a second microbridge detector level. The second microbridge detector level also includes an active area that absorbs incident radiation in an alternative one of the first range of wavelengths and the second range or wavelengths. With this apparatus, the dual-band detector can operate in a first range of wavelengths and also in a second range of wavelengths. In addition, this apparatus can be fabricated using existing processing techniques.
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Blackwell Richard
Marshall Charles M.
Glick Edward J.
Lockheed-Martin IR Imaging Systems, Inc.
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