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VOLTAGE-TUNABLE MULTIPLE-QUANTUM-WELL PHOTODETECTOR VERTICALLY INTEGRATED WITH VOLTAGE-TUNABLE MULTIPLE-QUANTUM-WELL FILTER
被引:11
作者:
GOOSSEN, KW
CUNNINGHAM, JE
SANTOS, MB
JAN, WY
机构:
[1] AT and T Bell Laboratories, Holmdel
关键词:
D O I:
10.1063/1.109082
中图分类号:
O59 [应用物理学];
学科分类号:
摘要:
We present a n-i[multiple quantum well (MQW)]-p-i(MQW)-n device wherein the bottom MQW functions as a voltage-tunable photodetector and the top MQW functions as a voltage-tunable filter, allowing enhanced detectivity at the exciton wavelength compared to photon energies below or above the band gap. Thus this device more closely approximates a true single wavelength, voltage-tunable photodetector. We achieve about 2-1 selectivity over a tuning range of 14 nm with 12 V operation.
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页码:3229 / 3231
页数:3
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