Temporal and spatial properties of a chopper disc Q-switched high power CO2-laser with an unstable resonator

M. Jung; Guenther Renz; K. Wessel; W. Schock

doi:10.1117/12.270224

4 April 1997 Temporal and spatial properties of a chopper disc Q-switched high-power CO₂ laser with an unstable resonator

M. Jung, Guenther Renz, K. Wessel, W. Schock

Author Affiliations +

Proceedings Volume 3092, XI International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference; (1997) https://doi.org/10.1117/12.270224
Event: XI International Symposium on Gas Flow and Chemical Lasers and High Power Laser Conference, 1996, Edinburgh, United Kingdom

Abstract

A numerical model is presented to describe the influence of the diffraction on the temporal and spatial properties of a Q- switched carbon-dioxide laser. The model includes the interaction of the spatial distribution of the laser field with the spatial distribution of the gain medium, the diffraction of the laser field due to edge effects of the rotating chopper disc, as well as the unstable resonator configuration. An rf-excited 5 kW carbon-dioxide laser has been used to produce a Q-switched peak power of 600 kW at a pulse duration of 200 ns and an average output power up to 1.3 kW. Comparison of the numerical results with the experimental data are shown.

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M. Jung, Guenther Renz, K. Wessel, and W. Schock "Temporal and spatial properties of a chopper disc Q-switched high-power CO₂ laser with an unstable resonator", Proc. SPIE 3092, XI International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (4 April 1997); https://doi.org/10.1117/12.270224

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