TY - GEN
T1 - NIR/LWIR dual-band infrared photodetector with optical addressing
AU - Cellek, O. O.
AU - Kim, H. S.
AU - Reno, J. L.
AU - Zhang, Yong-Hang
PY - 2012
Y1 - 2012
N2 - 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.
AB - 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.
KW - Multicolor photodetector
KW - focal plane array
KW - infrared photodetector
KW - multiband photodetector
KW - multispectral imaging
UR - http://www.scopus.com/inward/record.url?scp=84901342054&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84901342054&partnerID=8YFLogxK
U2 - 10.1117/12.920862
DO - 10.1117/12.920862
M3 - Conference contribution
AN - SCOPUS:84901342054
SN - 9780819490315
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Infrared Technology and Applications XXXVIII
PB - SPIE
T2 - 38th Conference on Infrared Technology and Applications
Y2 - 23 April 2012 through 27 April 2012
ER -