High-efficiency high-optical-quality transverse-flow CO2 laser

Iulian Gutu; Rares V. Medianu; Geo Georgescu; C. Petre; Ion N. Mihailescu; Koichi Kasuya

doi:10.1117/12.334423

22 December 1998 High-efficiency high-optical-quality transverse-flow CO₂ laser

Iulian Gutu, Rares V. Medianu, Geo Georgescu, C. Petre, Ion N. Mihailescu, Koichi Kasuya

Proceedings Volume 3574, XII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference; (1998) https://doi.org/10.1117/12.334423
Event: Twelfth International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, 1998, St. Petersburg, Russian Federation

Abstract

We developed and experimented a method for obtaining a transverse flow CO₂ laser-TFL- with a matching coefficient (the cross section of the laser beam/the cross section of the electrical discharge) -(eta) _m greater than 0.8 for a Fresnel number of the optical resonator -N_Fless than 2, in which both types of the active medium asymmetries are compensated. This corresponds to a TFL with high efficiency and TEM_00/01 good optical quality laser beam. The main elements for this laser are: gas circulation fluido-dynamical circuit in cylindrical geometry with two opposite electrical discharges; U-type laser resonator with a 90 degree deflection element (pentaprism alike), instead of one corner mirror, which reverse the wavefront of the laser beam in one of the two discharge channels. Also, it was developed a new very stable 90 degree-beam deflection optical element with properties alike pentaprism. This element might be used in optical resonator construction, transport and focusing systems of the laser beam.

Citation Download Citation

Iulian Gutu, Rares V. Medianu, Geo Georgescu, C. Petre, Ion N. Mihailescu, and Koichi Kasuya "High-efficiency high-optical-quality transverse-flow CO₂ laser", Proc. SPIE 3574, XII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (22 December 1998); https://doi.org/10.1117/12.334423

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