MIDWAVELENGTH INFRARED DETECTION WITH INXGA1-XAS/AL0.45GA0.55AS MULTIPLE-QUANTUM-WELL STRUCTURES

被引:12
作者
LENCHYSHYN, LC [1 ]
LIU, HC [1 ]
BUCHANAN, M [1 ]
WASILEWSKI, ZR [1 ]
机构
[1] NATL RES COUNCIL CANADA,INST MICROSTRUCT SCI,OTTAWA,ON K1A 0R6,CANADA
关键词
D O I
10.1088/0268-1242/10/1/007
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 demonstrate the detection of mid-wavelength (3-5 mum) infrared radiation by intersubband transitions in In(x)Ga1-xAs/Al0.45Ga0.55As multiple quantum well structures grown on GaAs substrates. The peak detector response is shifted from 4.8 to 4.3 mum by increasing the indium fraction from x = 0.05 to x = 0.20, while simultaneously decreasing the well width to keep the first excited eigenstate near the top of the wells. These detectors can be combined in detector stacks with conventional long-wavelength (8-12 mum) infrared quantum well detectors for multi-band imaging applications.
引用
收藏
页码:45 / 48
页数:4
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