Frequency Chirping In 10 Atmosphere CO2 Lasers

Paul A. Rochefort; Michel Piche

doi:10.1117/12.960238

18 February 1989 Frequency Chirping In 10 Atmosphere CO₂ Lasers

Paul A. Rochefort, Michel Piche

Proceedings Volume 0999, Laser Radar III; (1989) https://doi.org/10.1117/12.960238
Event: O-E/Fiber LASE '88, 1988, Boston, MA, United States

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.

Citation Download Citation

Paul A. Rochefort and Michel Piche "Frequency Chirping In 10 Atmosphere CO₂ Lasers", Proc. SPIE 0999, Laser Radar III, (18 February 1989); https://doi.org/10.1117/12.960238

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