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

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...

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Veröffentlicht in:	Applied Physics B Photophysics and Laser Chemistry 1984-02, Vol.33 (2), p.91-93
Hauptverfasser:	WILLETTS, D. V, HARRIS, M. R
Format:	Artikel
Sprache:	eng
Schlagworte:	Exact sciences and technology Fundamental areas of phenomenology (including applications) Gas lasers including excimer and metal-vapor lasers Lasers Optics Physics
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	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.
ISSN:	0721-7269 1432-0649
DOI:	10.1007/BF00688352