Backscatter-modulated laser diode for low-frequency small-amplitude vibration measurement

被引：11

作者：

Gharbi, T

Courteville, A

Chebbour, A

机构：

[1] Centre d'Etude et de Recherche sur l'Appareillage des Handicapé, Laboratoire d'Optique P. M. Duffieux, Centre National de la Recherche Scientifique URA 214, Université de Franche-Comte, Besanc on Cedex

[2] Laboratoire d'Optique P. M. Duffieux, Centre National de la Recherche Scientifique URA 214, Université de Franche-Comte, Besanc on Cedex

来源：

APPLIED OPTICS | 1997年 / 36卷 / 31期

关键词：

laser diode; optical feedback; vibration measurement; laser diode frequency modulation;

D O I：

10.1364/AO.36.008233

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Feedback phenomenon in laser diodes is applied to low-frequency vibration measurement in the micrometer range on poorly reflecting targets. The laser diode is frequency modulated. Its beam is focused on the vibrating target, and backscattered light is fed back into the laser. The optical laser diode power variation is processed to measure the frequency and amplitude of low-frequency vibrations of amplitude, similar to 100 nm to 10 mu m. Experimental results for sinusoidal and triangular vibrations are compared with theory. (C) 1997 Optical Society of America.

引用

页码：8233 / 8237

页数：5

共 7 条

[1] RANGE FINDING AND VELOCIMETRY WITH DIRECTIONAL DISCRIMINATION USING A MODULATED LASER-DIODE MICHELSON INTERFEROMETER [J].