Enlighten
Research publications by members of the University of Glasgow
home > services > Enlighten

A simple frequency discriminator circuit for offset locking of lasers

Padgett, M.J., Bett, N., and Butcher, R.J. (1988) A simple frequency discriminator circuit for offset locking of lasers. Journal of Physics E: Scientific Instruments, 21 (6). pp. 554-557. ISSN 0022-3735 (doi:10.1088/0022-3735/21/6/006)

Full text not currently available from Enlighten.

Abstract

Describes a frequency-lock circuit. The components used are readily available and the circuit can be easily reproduced. The design gives a fast loop response and large capture range, thus making it ideal for locking potentially noisy laser systems. In addition it is free from the problems of drift often associated with frequency-locked circuits. The authors have used the design to offset-lock two carbon dioxide lasers giving a resultant beat note only 500 Hz wide. The quality of the lock is independent of the size of the offset while the technique is adaptable to lasers in all parts of the spectrum, being limited only by the response of a suitable beat detector.

Item Type:Article
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Padgett, Prof Miles
Authors: Padgett, M.J., Bett, N., and Butcher, R.J.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of Physics E: Scientific Instruments
ISSN:0022-3735

University Staff: Request a correction | Enlighten Editors: Update this record