Monitoring thermodynamic and optical parameters of an RF excited CO2 pulsed laser plasma

Dorota A. Wojaczek; Edward F. Plinski; Jerzy S. Witkowski; Pawel Fortuna; Daniel Karlikowski; Krzysztof M. Abramski

doi:10.1117/12.621833

5 October 2005 Monitoring thermodynamic and optical parameters of an RF excited CO₂ pulsed laser plasma

Dorota A. Wojaczek, Edward F. Plinski, Jerzy S. Witkowski, Pawel Fortuna, Daniel Karlikowski, Krzysztof M. Abramski

Proceedings Volume 5958, Lasers and Applications; 59581F (2005) https://doi.org/10.1117/12.621833
Event: Congress on Optics and Optoelectronics, 2005, Warsaw, Poland

Abstract

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.

Citation Download Citation

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); https://doi.org/10.1117/12.621833

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