High-resolution laser homodyne interferometer

25 March 1971

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 7 (5-6) , 117-118
https://doi.org/10.1049/el:19710077

Abstract

A simple Michelson interferometer, illuminated by an amplitude stabilised He-Ne laser, has been used to monitor extremely small optical-path-length variations. The instrument is capable of determining a change of 1 Å (2×10⁻³ rad), with a time resolution of approximately 3 μs.

Keywords

DISTANCE MEASUREMENT
HE-NE LASER
LASER BEAMS APPLICATIONS
MICHELSON INTERFEROMETER
HOMODYNE TECHNIQUE
OPTICAL PATH LENGTH MONITORING

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