Unstable resonator with semitransparent output coupler for transverse-flow CO2 laser

Pavel Anatolievich Mikheyev; Valeri D. Nikolaev; Alexander Anatolievich Shepelenko

doi:10.1117/12.130740

10 December 1992 Unstable resonator with semitransparent output coupler for transverse-flow CO₂ laser

Pavel Anatolievich Mikheyev, Valeri D. Nikolaev, Alexander Anatolievich Shepelenko

Proceedings Volume 1752, Current Developments in Optical Design and Optical Engineering II; (1992) https://doi.org/10.1117/12.130740
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

An unstable resonator with semitransparent output coupler (NRPOZ) and low magnification is investigated theoretically and experimentally for Fresnel numbers 5 - 15 and small signal gain 0.5 - 2.4. With the help of numerical simulation the condition of minimum diffraction losses is found. The beam divergence in the dc-discharge transverse-flow kilowatt-power CO₂ laser was approximately two times less in comparison with telescopic unstable resonator without substantial loss of mode volume and output power.

Citation Download Citation

Pavel Anatolievich Mikheyev, Valeri D. Nikolaev, and Alexander Anatolievich Shepelenko "Unstable resonator with semitransparent output coupler for transverse-flow CO₂ laser", Proc. SPIE 1752, Current Developments in Optical Design and Optical Engineering II, (10 December 1992); https://doi.org/10.1117/12.130740

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