Shot noise suppression in avalanche photodiodes

被引：8
|
作者：
Ma, F [1 ]
Wang, SL [1 ]
Campbell, JC [1 ]
机构：
[1] Univ Texas, Dept Elect & Comp Engn, Ctr Microelect Res, Austin, TX 78712 USA
来源：
PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 17期
关键词：
D O I：
10.1103/PhysRevLett.95.176604
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We identify a new shot noise suppression mechanism in a thin (similar to 100 nm) heterostructure avalanche photodiode. In the low-gain regime the shot noise is suppressed due to temporal correlations within amplified current pulses. We demonstrate in a Monte Carlo simulation that the effective excess noise factors can be < 1, and reconcile the apparent conflict between theory and experiments. This shot noise suppression mechanism is independent of known mechanisms such as Coulomb interaction, or reflection at heterojunction interfaces.
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页数：4
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