Abstract

A technique for frequency stabilizing a high power, single frequency argon laser is described which offers certain advantages over those that have already been reported. This system is capable of maintaining a relative short term frequency stability of the order of ±2 parts in 10⁹ and a long term stability (2 h) of about ±5 parts in 10⁹ for the 5145-Å line at a power level of 750 mW. This short and long term stability is achieved by means of a multiple feedback loop composed of an optical cavity discriminator which is stabilized against an iodine vapor absorption line.

© 1972 Optical Society of America

Method for Stabilizing the Frequency of an Unmodulated Laser Output*

Keiichi Tanaka
J. Opt. Soc. Am. 62(1) 24-29 (1972)

Frequency Stabilization of a Gas Laser

W. J. Tomlinson and R. L. Fork
Appl. Opt. 8(1) 121-129 (1969)

Frequency Stabilization of Internal-Mirror Helium–Neon Lasers

R. Balhorn, H. Kunzmann, and F. Lebowsky
Appl. Opt. 11(4) 742-744 (1972)

High Power Pulsed HCN Laser

L. E. Sharp and A. T. Wetherell
Appl. Opt. 11(8) 1737-1741 (1972)

Vacuum Ultraviolet Emission from High Density Spark Discharges in Argon and Helium

Lothar Michel and Heinz Fischer
Appl. Opt. 11(4) 899-906 (1972)