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A plasma effect in injection-mode selection of TEA CO2 lasers

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Abstract

We present experimental evidence obtained by a laser heterodyne technique for a chirp of about 1014 Hz/s in the cavity resonance during the pulse build-up time of a TEA CO2 laser. The frequency sweep arises from the refractive-index contribution of the time-dependent electron density in the exciting discharge plasma. The phenomenon provides a mechanism, previously unexplained, for the extended and asymmetric mode selection zone in injection experiments.

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Authors and Affiliations

  1. Royal Signals and Radar Establishment, St. Andrews Road, Great Malvern, Worcestershire, UK

    D. V. Willetts & M. R. Harris

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  1. D. V. Willetts
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  2. M. R. Harris
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Willetts, D.V., Harris, M.R. A plasma effect in injection-mode selection of TEA CO2 lasers. Appl. Phys. B 33, 91–93 (1984). https://doi.org/10.1007/BF00688352

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  • DOI: https://doi.org/10.1007/BF00688352

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