Parametric investigation of the small-signal gain in a large aperture e-beam controlled CO2 laser

Wolfgang Riede; Wilhelm Mayerhofer; Thomas Hall; S. Walther; Guenther Renz

doi:10.1117/12.270219

4 April 1997 Parametric investigation of the small signal gain in a large aperture e-beam-controlled CO₂ laser

Wolfgang Riede, Wilhelm Mayerhofer, Thomas Hall, S. Walther, Guenther Renz

Proceedings Volume 3092, XI International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference; (1997) https://doi.org/10.1117/12.270219
Event: XI International Symposium on Gas Flow and Chemical Lasers and High Power Laser Conference, 1996, Edinburgh, United Kingdom

Abstract

In an e-beam controlled carbon-dioxide laser unit the spatial, temporal and spectral properties of the small-signal gain were investigated in a single pass geometry. A smooth spatial distribution was found with peak values of 2.9%/cm near the cathode at 112.5 J/(1 bar). No reduction in the gain value was monitored up to repetition rates of 60 Hz when circulating the laser gas with a gas flow velocity of 100 m/s. A HeNe laser probe beam, being collinear to the carbon-dioxide laser beam, was used to monitor shock waves or mechanical vibrations by measuring its deflection. This investigation showed, that the small-signal gain measurements were not interfered by any disturbances.

Citation Download Citation

Wolfgang Riede, Wilhelm Mayerhofer, Thomas Hall, S. Walther, and Guenther Renz "Parametric investigation of the small signal gain in a large aperture e-beam-controlled CO₂ laser", Proc. SPIE 3092, XI International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (4 April 1997); https://doi.org/10.1117/12.270219

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