Accession Number : AD0715136

Title :   Velocity Dependence of the Gain of a CO2 Laser.

Descriptive Note : Technical rept.,

Corporate Author : UNITED AIRCRAFT CORP EAST HARTFORD CONN RESEARCH LABS

Personal Author(s) : Smith,David C.

Report Date : DEC 1970

Pagination or Media Count : 14

Abstract : Measurements of the small signal gain and saturation intensity of CO2-N2-He laser are made as a function of gas flow velocity over the range from approximately 0 to 10 m/sec. The small signal gain increases and the saturation intensity decreases with increased gas velocity. For intermediate flow velocities with a gas transit time in the laser of a second, the saturation intensity also depends on the direction of propagation of the amplifier beam with respect to the gas flow. The directional dependence is due to an axial gradient in the saturation intensity. The transit time of the gas in the 2.5 meter amplifier spans the time required for appreciable generation of CO by dissociation of the CO2, and the variation of the laser gain with velocity is attributed to the effects of CO on the inversion of the laser medium. (Author)

Descriptors :   (*GAS LASERS, PERFORMANCE(ENGINEERING)), GAIN, GAS FLOW, CARBON DIOXIDE, DISSOCIATION

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE