USE OF QUANTUM-NOISE CORRELATION FOR NOISE-REDUCTION IN SEMICONDUCTOR-LASERS

被引：17
作者：
KARLSSON, A
BJORK, G
机构：
[1] Royal Institute of Technology, Department of Microwave Engineering, Box 70033
来源：
PHYSICAL REVIEW A | 1991年 / 44卷 / 11期
关键词：
D O I：
10.1103/PhysRevA.44.7669
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Both the junction voltage fluctuations and the frequency fluctuations of a semiconductor laser are highly correlated with its intensity noise. We analyze three schemes where the correlation information is used to reduce the intensity noise. In conventional semiconductor lasers, starting with intensity noise at the standard quantum limit, ideally 3-dB amplitude squeezing is possible. The influence of nonideal factors such as parasitics for junction voltage feedforward and the linewidth floor for frequency noise feed-forward are discussed. It is shown that under certain conditions the number-phase uncertainty can reach the ultimate limit set by Heisenberg's uncertainty principle. These conditions are clarified, and examples are given for both conventional semiconductor lasers and microcavity lasers.
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收藏
页码：7669 / 7683
页数：15
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