Precision length change followed by dynamic detection of the laser frequency locked to interference fringe

Seiichi Kakuma; Jun Hoshii; Norihiko Takahashi; Ryoji Ohba

doi:10.1117/12.354930

19 July 1999 Precision length change followed by dynamic detection of the laser frequency locked to interference fringe

Seiichi Kakuma, Jun Hoshii, Norihiko Takahashi, Ryoji Ohba

Proceedings Volume 3749, 18th Congress of the International Commission for Optics; (1999) https://doi.org/10.1117/12.354930
Event: ICO XVIII 18th Congress of the International Commission for Optics, 1999, San Francisco, CA, United States

Abstract

This paper describes a new interferometric method to measure length changes precisely. Frequency of a laser which is locked to one of interference fringe intensity peaks of an interferometer so that it may change linearly proportional to displacement given to one of the interferometer mirrors. The frequency shift is determined by direct beam frequency counting referring another frequency stabilized laser. Resolution of nm is achieved.

Citation Download Citation

Seiichi Kakuma, Jun Hoshii, Norihiko Takahashi, and Ryoji Ohba "Precision length change followed by dynamic detection of the laser frequency locked to interference fringe", Proc. SPIE 3749, 18th Congress of the International Commission for Optics, (19 July 1999); https://doi.org/10.1117/12.354930

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KEYWORDS

Interferometers

Laser stabilization

Mirrors

Optical amplifiers

Semiconductor lasers

Control systems

Feedback control

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