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5 October 2005 Monitoring thermodynamic and optical parameters of an RF excited CO2 pulsed laser plasma
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Results of the investigations on an RF pulsed excited CO2 laser plasma are given in the paper. A slab-waveguide configuration of the laser is used. An unstable positive branch resonator structure is applied to ensure a single-mode operation of the laser. The configuration of the laser system guaranties a spectral purity of the laser output radiation, and makes the investigations clear. As known, a pulse excitation introduces dramatic perturbations of the laser plasma pressure, and temperature. The density of the laser gas mixture, or in other words, the refractive index is changed during the input pulse developing, as a consequence. The laser radiation frequency is changed in time of the laser pulse duration. Sometimes it is a parasitic effect, when a single-frequency laser operation is required. The aim of the work is to give a clear picture of the laser plasma behavior caused by a pulse excitation of the laser medium. The results obtained gives a possibility to elaborate the method of a laser frequency control in a pulsed regime.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dorota A. Wojaczek, Edward F. Plinski, Jerzy S. Witkowski, Pawel Fortuna, Daniel Karlikowski, and Krzysztof M. Abramski "Monitoring thermodynamic and optical parameters of an RF excited CO2 pulsed laser plasma", Proc. SPIE 5958, Lasers and Applications, 59581F (5 October 2005);

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