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Proceedings Paper

Frequency Chirping In 10 Atmosphere CO2 Lasers
Author(s): Paul A. Rochefort; Michel Piche
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Paper Abstract

The frequency chirping of high pressure CO2 lasers operated at 10 atmospheres was investigated experimentally. When the high pressure lasers were not placed in optical cavities, significant changes in the index of refraction of the laser medium were observed. A rapid phase perturbation associated to the discharge was then detected; the phase shift could attain 100 degrees. This rapid phase perturbation was followed by a much slower phase drift. The insertion of the high pressure CO2 lasers in optical cavities led to single mode emission when seeded with continuous CO2 lasers. Absolute chirp rates reaching 200 MHZ/μs were measured during the 100 nanosecond pulses.

Paper Details

Date Published: 18 February 1989
PDF: 5 pages
Proc. SPIE 0999, Laser Radar III, (18 February 1989); doi: 10.1117/12.960238
Show Author Affiliations
Paul A. Rochefort, Universite Laval (Canada)
Michel Piche, Universite Laval (Canada)

Published in SPIE Proceedings Vol. 0999:
Laser Radar III
Richard J. Becherer, Editor(s)

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