Abstract

Frequency stabilization of an internal mirror He–Ne laser by a new simple method is reported. In this method, the laser cavity length is modulated by stretching the front part of the laser tube using lateral stress; in this way the laser cavity length is stabilized on the Lamb dip. The relative frequency stability is ±4.1 × 10⁻⁹ over 1 h or longer.

© 1991 Optical Society of America

Frequency stabilization of internal-mirror He–Ne lasers by air cooling

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