ISSN:
1432-0649
Keywords:
42.55 D
;
42.60 B
;
42.80 L
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract An ir CO2, dc current pumped, optical waveguide (WG) amplifier has been built, and its active medium optical parameters measured for several CO2 emission lines, and their dependence from active medium total pressure, discharge current and temperature was investigated. High gain is found which, coupled with relatively high saturation power in the WG fundamental mode and ease of fabrication with this technology in long (up to 1.5 m) lengths, indicates promising use to efficiently amplify high spectral and spatial purity output of a short, highly tunable WG laser up to power levels suited for nonlinear spectroscopy and optical pumping. The dependence of the small signal gain coefficient and of the saturation parameter for individual rotational lines on the radiation intensity was computed using experimentally known parameters of the discharge plasma. The computation was carried out using the two mode rate equation approach for CO2−N2−He gas mixtures. A satisfactory agreement between theoretical and experimental results was obtained.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00691766
