Polarization Sagnac interferometer with a common-path local oscillator for heterodyne detection

被引：24
|
作者：
Beyersdorf, PT [1 ]
Fejer, MM [1 ]
Byer, RL [1 ]
机构：
[1] Stanford Univ, Ginzton Lab, Stanford, CA 94305 USA
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 1999年 / 16卷 / 09期
关键词：
D O I：
10.1364/JOSAB.16.001354
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We describe a free-space common-path polarization Sagnac interferometer. The polarization Sagnac interferometer is used in a symmetric fashion with detection on the dark fringe of the interference to avoid photodetector saturation when high-powered illumination is used. By modulating the carrier field that is reflected from the interferometer, we generate a local oscillator for heterodyne detection of the signal field. We calculate the effect of optical element misalignments and imperfect polarization on the shot-noise-limited sensitivity of the interferometer. The predictions are experimentally verified with a 2-m arm-length tabletop polarization Sagnac interferometer. (C) 1999 Optical Society of America [S0740-3224(99)02609-0].
引用
收藏
页码：1354 / 1358
页数：5
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