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Optical Engineering

Operational characteristics of a pulse-sustained dc-excited transverse-flow cw CO2 laser of 5-kW output power
Author(s): Ashish Kumar Nath; Lala Abhinandan; Praveen Choudhary
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Paper 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.

Paper Details

Date Published: 1 June 1994
PDF: 5 pages
Opt. Eng. 33(6) doi: 10.1117/12.168848
Published in: Optical Engineering Volume 33, Issue 6
Show Author Affiliations
Ashish Kumar Nath, Ctr. for Advanced Technology (India)
Lala Abhinandan, Ctr. for Advanced Technology (India)
Praveen Choudhary, Ctr. for Advanced Technology (India)

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