Vol. 2, issue 01, article # 8
pdf Ivanov S. V., Panchenko V. Ya. On laser excitation of molecular vibrational transitions with dense rotational spectral structure. // Atmospheric and oceanic optics. 1989. V. 2. No. 01. P. 40-46.Copy the reference to clipboard
Abstract:
Linear and nonlinear absorption of laser radiation at molecular vibrational transitions with dense rotational spectral structure typical for bent triatomic atmospheric molecules have been considered. In quasistationary approximation of incoherent rate equations for populations of energy levels the influence of following factors on opti-cal excitation probability has been studied: frequency instability of radiation, spectral width of radiation, random rotational structure of absorption band, shape of absorp-tion lines. Criteria of linear and nonlinear collective absorption of radiation in a band have been formulated. Conditions of square root dependence of excitation probability upon laser intensity have been determined.
References:
1. V.F. Gordietz, A.F. Osipov and L.A. Shelepin Kinetic Processes in Gases and Molecular Lasers. (Nauka, Moscow, 512, 1980)
2. S.V. Ivanov, V.Ya. Panchenko and A.P. Sukhorukov Vestnik MSU, ser. Fizika, Astronomia, 25, 64 (1984)
3. A.V. Chugunov, M.S. Djidjoev, S.V. Ivanov and V.Ya. Panchenko Opt.Lett., 10, 615 (1985)
4. M.S. Djidjoev, S.V. Ivanov, V.Ya. Panchenko and A.V. Chugunov Kvantovaja Elektron., 13, 740 (1986)
5. S.V. Ivanov and V.Ya. Panchenko Preprint NITTSLAN, No. 28 (1987)
6. A. Barbe, C. Secroun, P. Jouve et al. J. Molec. Spectrosc., 64, 343 (1977)
7. R.M. Goody Atmospheric Radiation, Part I, Theoretical Bases. (Oxford at the Clarendon Press., 1964)
8. V.V. Fomin in: Spectral Manifestation of Molecular Interactions in Gases Ed. by Yu.S. Makushkin, (Nauka, Novosibirsk 1982)