Operational characteristics of a pulse-sustained dc-excited            transverse-flow cw CO<sup>2</sup> laser of 5-kW output power

Ashish Kumar Nath; Lala Abhinandan; Praveen Choudhary

doi:10.1117/12.168848

1 June 1994 Operational characteristics of a pulse-sustained dc-excited transverse-flow cw CO₂ laser of 5-kW output power

Ashish Kumar Nath, Lala Abhinandan, Praveen Choudhary

Author Affiliations +

Optical Engineering, Vol. 33, Issue 6, (June 1994). https://doi.org/10.1117/12.168848

Abstract

Performance characteristics of a transverse-gas-flow cw CO₂ laser in which dc discharge was sustained by simultaneous application of high-repetition-rate, high-voltage, short-duration electrical pulses are presented. This excitation scheme enabled maintaining a stable and uniform discharge with electrical input power density more than 15 W/cm³ in a typical laser gas mixture of 2 mbar CO₂, 14 mbar N₂, and 30 mbar He. Maximum laser power of 5.2 kW was obtained with 15% electro-optic efficiency from a pair of active regions each of 1-rn length incorporated with a folded stable optical resonator. The effect of water vapor on laser performance is also discussed.

Citation Download Citation

Ashish Kumar Nath, Lala Abhinandan, and Praveen Choudhary "Operational characteristics of a pulse-sustained dc-excited transverse-flow cw CO₂ laser of 5-kW output power," Optical Engineering 33(6), (1 June 1994). https://doi.org/10.1117/12.168848

Published: 1 June 1994

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