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