High-frequency response of intersubband infrared photodetectors with a multiple quantum well structure

被引：13
|
作者：
Ryzhii, V
Khmyrova, I
Ryzhii, M
机构：
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1997年 / 36卷 / 5A期
关键词：
quantum well; intersubband photoexcitation; infrared radiation; transit time; capture time;
D O I：
10.1143/JJAP.36.2596
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have theoretically studied the response of quantum well intersubband photodetectors to high-frequency modulated infrared radiation. The small-signal responsivity dependent on the modulation frequency of infrared radiation and device parameters has been derived using the proposed analytical model. It has been shown that with increasing modulation frequency the roll-off of the small-signal responsivity is associated with the electron transit and capture effects which limit the device bandwidth.
引用
收藏
页码：2596 / 2600
页数：5
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