Abstract

A new process for stabilizing the frequency of commercially available 543-nm He–Ne lasers is described. The stabilization method is based on anomalous dispersion of the gain medium. A total of four green lasers have been stabilized—two at the National Institute of Standards and Technology and two at the Institute of Scientific Instruments of the Czech Academy of Sciences—making it possible to study frequency variations of the lasers relative to each other. We have also stabilized a 633-nm laser by the use of the same method used for 543 nm.

© 1995 Optical Society of America

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