The ratio of the rotational Raman gain coefficients g of N2 [S(8), 0.91 amagat] and H2 [S(1), 0.73 amagat] was determined at 295 K by measuring the 5% conversion threshold for each in the same focused configuration, using a circularly polarized 1054-nm laser. After correcting for dispersion, the optical Stark effect, transient effects, laser-wing Stokes seed injection, and mode-beat intensity modulation, we obtained g(N2)/g(H2) = (8.0 ± 1.2) × 10-3, so that g(N2) = 4.0 ± 0.8 cm/TW.
© 1987 Optical Society of America
D. Klimek, K. Leung, M. Oron, and A. Flusberg, "Measurement of Raman gain of the S(8) transition of N2," Opt. Lett. 12, 495-497 (1987)