Determination of the saturation parameter of a cw CO/sub 2/ gasdynamic laser

Journal Article · Thu Dec 01 04:00:00 EST 1977 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.323569· OSTI ID:7278426

Hara, H

The saturation parameter of a cw CO/sub 2/ gasdynamic laser was calculated from consecutive measurements of output power and small-signal gain performed at the same experimental conditions. The measurement of small-signal gain was made as a function of the of the H/sub 2/O concentration in the laser gas; measurements of output power were done as a function of the H/sub 2/O concentration in the laser gas and as a function of laser-cavity diffraction loss which was varied by changing the diameter of an aperture placed in the laser cavity. Saturation parameters obtained by both methods coincide with each other, I/sub s/=3.0 kW/cm/sup 2/. This value is insensitive to the H/sub 2/O concentration and this behavior is qualitatively explained by a two-level model.

• Research Organization: First Research Center, Japan Defense Agency 2-2-1, Nakameguro, Meguroku, Tokyo, Japan
• OSTI ID: 7278426
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 48:12; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
CARBON DIOXIDE LASERS
GAIN
GAS LASERS
HYDROGEN COMPOUNDS
LASER CAVITIES
LASERS
OXYGEN COMPOUNDS
POWER
SATURATION
WATER