Antenna structures for optical coupling in quantum-well infrared detectors

被引：0
|
作者：
Beck, WA [1 ]
Mirotznik, MS [1 ]
Faska, TS [1 ]
机构：
[1] USA, Res Lab, Adelphi, MD 20783 USA
来源：
LONG WAVELENGTH INFRARED DETECTORS AND ARRAYS: PHYSICS AND APPLICATIONS V | 1997年 / 33卷
关键词：
D O I：
暂无
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Predicted performance for antenna-coupled quantum-well infrared photodetectors (QWIPs) is presented. These structures contain a patterned metal antenna layer and dielectric backplane reflector in place of the usual metal phase grating. When illuminated by normally incident plane-wave illumination, the antenna structures generate both evanescent and propagating modes that have the required polarization to be absorbed by the aw stack. An undersampled spectral technique is also demonstrated for using the finite-difference, time-domain (FDTD) technique to compute spectral quantum efficiency in a single FDTD run.
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页码：48 / 62
页数：15
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