Thermodynamic processes in an RF pulsed excited CO2 slab-waveguide laser

Edward F. Plinski; Dorota A. Wojaczek; Jerzy S. Witkowski; Pawel W. Kaczmarek; Piotr Kulczycki; Igor Tazbir; Andrzej B. Dobrucki; Krzysztof M. Abramski

doi:10.1117/12.527388

1 June 2004 Thermodynamic processes in an RF pulsed excited CO₂ slab-waveguide laser

Edward F. Plinski, Dorota A. Wojaczek, Jerzy S. Witkowski, Pawel W. Kaczmarek, Piotr Kulczycki, Igor Tazbir, Andrzej B. Dobrucki, Krzysztof M. Abramski

Author Affiliations +

Proceedings Volume 5333, Laser Resonators and Beam Control VII; (2004) https://doi.org/10.1117/12.527388
Event: Lasers and Applications in Science and Engineering, 2004, San Jose, Ca, United States

Abstract

A pulsed excitation of the laser plasma in gas lasers creates an acoustic wave in the laser reservoir. It changes thermodynamic parameters of the laser plasma in the laser cavity like pressure, and temperature, as well, and consequently it changes the density of the laser plasma, or, in other words, the refractive index of the laser medium. Tuning laser frequency during the pulse developing is observed as a result. The measurements of the pressure, temperature, and refractive index changes in an RF pulsed excited C_O2 slab-waveguide laser are purposes of the work. The pressure changes are measured with calibrated microphones situated close to the laser plasma. The temperature changes are calculated via measured refractive index characteristics, and simple formulas linking the refractive index with the gas density. The picture of the acoustic wave propagation in the laser cavity is presented. The obtained results give the picture of the laser plasma behavior during the pulsed excitation. It leads to a single frequency pulsed laser operation design.

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Edward F. Plinski, Dorota A. Wojaczek, Jerzy S. Witkowski, Pawel W. Kaczmarek, Piotr Kulczycki, Igor Tazbir, Andrzej B. Dobrucki, and Krzysztof M. Abramski "Thermodynamic processes in an RF pulsed excited CO₂ slab-waveguide laser", Proc. SPIE 5333, Laser Resonators and Beam Control VII, (1 June 2004); https://doi.org/10.1117/12.527388

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