HARMONIC DEMODULATION OF NONSTATIONARY SHOT NOISE

被引：9

作者：

GRAY, MB

STEVENSON, AJ

BACHOR, HA

MCCLELLAND, DE

机构：

[1] Department of Physics and Theoretical Physics, Faculty of Science, The Australian National University, Canberra, ACT, 2601

来源：

OPTICS LETTERS | 1993年 / 18卷 / 10期

关键词：

D O I：

10.1364/OL.18.000759

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on experimental demodulation of nonstationary shot noise, which is associated with strongly modulated light. For sinusoidal modulation and demodulation, measurements confirm theoretical predictions of 1.8-dB excess noise in the modulation quadrature and 3-dB noise reduction in the opposite quadrature, relative to the standard quantum limit. Demodulation with a third harmonic produces noise correlated with that which is due to the fundamental. Reducing excess noise by 0.8 dB in the modulation quadrature, by combining the fundamental and third harmonics in a 2:1 ratio, is shown to be feasible.

引用

页码：759 / 761

页数：3