Effect of beat frequency on the measured phase of laser-diode heterodyne interferometry

被引：11
|
作者：
Onodera, R
Ishii, Y
机构：
[1] Department of Electronics, University of Industrial Technology, Kanagawa, 229, Sagamihara
来源：
APPLIED OPTICS | 1996年 / 35卷 / 22期
关键词：
laser diode; optical heterodyne interferometer; phase-extraction analysis;
D O I：
10.1364/AO.35.004355
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An optical heterodyne interferometer with a frequency-ramped laser diode has been constructed. The effect of the beat frequency on the measured phase has been theoretically investigated in the frequency domain and experimentally verified. Phase errors caused by the difference between the ramp frequency and the beat frequency alter sinusoidally in accordance with the pi periodicity of the interferogram. The error can be eliminated by the electronic calibration technique of the beat frequency. (C) 1996 Optical Society of America
引用
收藏
页码：4355 / 4360
页数：6
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