Investigation of frequency difference stabilization of stress birefringence dual frequency lasers

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:529717

Shulian, Zhang; Yan, Li; Xiaohong, Quan; Yanmei, Han; Kelan, Li ^[1]

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1. Tsinghua Univ., Beijing (China). Dept. of Precision Instruments

This paper introduces a new method for both producing and stabilizing the frequency difference of a HeNe birefringence dual frequency laser, which employs a PZT to press the intracavity quartz crystal plate according to the difference between objective beat frequency and output beat frequency of the laser. A Zeeman effect double frequency laser has been used widely in double frequency interferometers and laser Doppler velocimeters. In a Zeeman laser the frequency difference is produced both by Zeeman splitting and longitudinal mode frequency drawing. The amount of frequency difference is 1.5 MHz, that is, 2 {times} 10{sup {minus}3} times as much as frequency splitting produced by the Zeeman effect. It is not difficult to prove that to obtain a large frequency difference is impossible.

• Sponsoring Organization: National Natural Science Foundation of China, Beijing, BJ (China)
• OSTI ID: 529717
• Report Number(s): CONF-9611124--; ISBN 0-8194-2290-8
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
HELIUM-NEON LASERS
LASER CAVITIES
MODE SELECTION
STABILIZATION
ZEEMAN EFFECT