22 December 1998 High-efficiency high-optical-quality transverse-flow CO2 laser
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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 -NFless than 2, in which both types of the active medium asymmetries are compensated. This corresponds to a TFL with high efficiency and TEM00/01 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.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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); doi: 10.1117/12.334423; https://doi.org/10.1117/12.334423
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