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Proceedings Paper

High-efficiency high-optical-quality transverse-flow CO2 laser
Author(s): Iulian Gutu; Rares V. Medianu; Geo Georgescu; C. Petre; Ion N. Mihailescu; Koichi Kasuya
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Paper 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.

Paper Details

Date Published: 22 December 1998
PDF: 8 pages
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
Show Author Affiliations
Iulian Gutu, National Institute for Laser, Plasma, and Radiation Physics (Romania)
Rares V. Medianu, National Institute for Laser, Plasma, and Radiation Physics (Romania)
Geo Georgescu, National Institute for Laser, Plasma, and Radiation Physics (Romania)
C. Petre, National Institute for Laser, Plasma, and Radiation Physics (Romania)
Ion N. Mihailescu, National Institute for Laser, Plasma, and Radiation Physics (Romania)
Koichi Kasuya, Tokyo Institute of Technology (Japan)


Published in SPIE Proceedings Vol. 3574:
XII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference
Anatoly S. Boreisho; Gennady A. Baranov, Editor(s)

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