Voltage-tunable two-color corrugated-QWIP focal plane arrays

被引：7
|
作者：
Choi, Kwong-Kit [1 ]
Jhabvala, Murzy D. [2 ]
Peralta, Richard J. [3 ]
机构：
[1] USA, Res Lab, Adelphi, MD 20783 USA
[2] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
[3] Raytheon Vis Syst, Goleta, CA 93105 USA
来源：
IEEE ELECTRON DEVICE LETTERS | 2008年 / 29卷 / 09期
关键词：
infrared detectors; infrared image sensors; quantum wells;
D O I：
10.1109/LED.2008.2001248
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We demonstrated a 256 x 256 voltage-tunable two-color corrugated quantum-well infrared-photodetector focal plane array. The detector operation is based on photocurrent asymmetry in a double-superlattice quantum well structure. By using a broad-band corrugated light coupling scheme, we obtained a quantum efficiency of 24% in the mid-wave (MW) band and 26% in the long-wave (LW) band without AR coating. Operating at 50 K, the measured noise equivalent temperature difference is 27 mK at 33-ms integration time for the MW and 90 mK at 2 ms for the LW with 172.44 optics. The NETD operability values are 98.4% and 95.9%, respectively.
引用
收藏
页码：1011 / 1013
页数：3
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