Title :
Laser interferometer using a dual interference method
Author :
Yang, K.H. ; Chen, Luo-nan ; Zhang, S.Y.
Author_Institution :
Nanjing University, Institute of Acoustics, Nanjing, China
Abstract :
A stabilised Michelson interferometer system using a new interference mode has been developed, in which a specially designed beam-splitter produces two complementary interference patterns. With differential detection, the laser intensity noise is efficiently eliminated, and the system is simpler and stabler. The measured displacement sensitivity is 10¿2 A¿/ ¿(HZ).
Keywords :
displacement measurement; light interferometers; light interferometry; measurement by laser beam; beam-splitter; complementary interference patterns; differential detection; displacement measurement; displacement sensitivity; dual interference method; interference mode; laser intensity noise elimination; laser interferometer; stabilised Michelson interferometer system;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870497
