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Narrow resonances (Δv=2·10−2 cm−1) of multiple-photon IR absorption in ethylene

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Abstract

Narrow peaks of multiple-photon absorption in thev 7 band of ethylene with the spectral width 0.02 cm−1 and the contrast factor of up to 102 have been observed at the intensity of laser radiation 0.04 and 0.6 MW/cm2. The multiple-photon spectra of ethylene in intense IR field have been studied with the use of a quasi-single-mode continuously tunable CO2 laser. The results of the experiments are interpreted within the model of spepwise molecular excitation due to weak transitions.

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Authors and Affiliations

  1. Institute of Spectroscopy, Academy of Sciences USSR, SU-142092, Moscow Academgorodok, USSR

    I. N. Knyazev, N. P. Kuzmina, V. S. Letokhov, V. V. Lobko & A. A. Sarkisyan

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  1. I. N. Knyazev
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  2. N. P. Kuzmina
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  3. V. S. Letokhov
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  4. V. V. Lobko
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  5. A. A. Sarkisyan
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Knyazev, I.N., Kuzmina, N.P., Letokhov, V.S. et al. Narrow resonances (Δv=2·10−2 cm−1) of multiple-photon IR absorption in ethylene. Appl. Phys. 22, 429–432 (1980). https://doi.org/10.1007/BF00901069

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