A plasma effect in injection-mode selection of TEA CO2 lasers
Abstract
Experimental evidence obtained by a laser heterodyne technique for a chirp of about 10 to the 14th Hz/s in the cavity resonance during the pulse build-up time of a TEA CO2 laser is presented. 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.
- Publication:
-
Applied Physics B Photophysics Laser Chemistry
- Pub Date:
- February 1984
- Bibcode:
- 1984ApPPL..33...91W
- Keywords:
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- Carbon Dioxide Lasers;
- Injection Lasers;
- Laser Modes;
- Laser Outputs;
- Plasma Jets;
- Tea Lasers;
- Laser Cavities;
- Optical Heterodyning;
- Pulsed Lasers;
- Lasers and Masers