Sulfur dioxide absorption at DF laser wavelengths
Applied Optics, Vol. 19, Issue 20, pp. 3449-3452 (1980)
http://dx.doi.org/10.1364/AO.19.003449
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Abstract
The absorption coefficient of SO2 under atmospheric conditions was measured at twenty DF laser lines. Weak absorption (α* ≲ 0.003 cm-1 atm-1) was found for a few wavelengths around 3.7 µm. Only the P4(6) line at 3.9843 µm (ν = 2509.86 cm-1) is strongly absorbed [α* =(0.44 ± 0.01) cm-1 atm-1]. The pressure dependence of the P4(6) cross section was measured. Self-broadening and foreign-gas broadening coefficients are between 1.5 and 5 MHz/Torr, and the distance from the P4(6) DF line to the center of the nearest SO2 line is (0.0043 ± 0.0004) cm-1.
© 1980 Optical Society of America
Citation
J. Altmann and P. Pokrowsky, "Sulfur dioxide absorption at DF laser wavelengths," Appl. Opt. 19, 3449-3452 (1980)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-19-20-3449
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