Power deposition characteristics of a 40-MHz RF-excited slab CO2 laser

Yoshio Ishii; Kazuhiro Watanabe

doi:10.1117/12.515468

10 November 2003 Power deposition characteristics of a 40-MHz RF-excited slab CO₂ laser

Yoshio Ishii, Kazuhiro Watanabe

Proceedings Volume 5120, XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; (2003) https://doi.org/10.1117/12.515468
Event: XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2002, Wroclow, Poland

Abstract

In this study, power deposition characteristics of the 40MHz slab excitation carbon dioxide laser has been carefully investigated in which the relationship between the filled gas pressures and input power densities have been obtained so as to sustain stable α discharges. As a result, a laser output power of 60-90W was obtained with a corresponding conversion efficiency as high as 9.5-10% under the condition of 0.6 -1 kW discharge input into Xe-added 1:1:8 Helium-rich gas filling which corresponds to 22-37 W/cc of the input power density. The obtained characteristics in this work shows that relatively high conversion efficiency can be realized with stable α discharge by choosing the optimum operational gas pressures and power input densities under the use of the Xe(2.5%)-added, Helium-rich gas mixture(1:1:8).

Citation Download Citation

Yoshio Ishii and Kazuhiro Watanabe "Power deposition characteristics of a 40-MHz RF-excited slab CO₂ laser", Proc. SPIE 5120, XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (10 November 2003); https://doi.org/10.1117/12.515468

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