Observation of four-wave parametric interactions in cesium and barium vapors

Venkin, G V; Krochik, G. M.; Kulyuk, L.; Maleev, D I; Khronopulo, Yu. G.

doi:10.1070/qe1976v006n03abeh011097

Cited by 5 publications

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“…On the other hand, such a complex spectrum could be explained on the assumption that only the S 0 (S) and 5Ό(10) transitions were excited and all the other lines were formed as a result of parametric four-photon processes involving a resonant nonlinearity. 7 In the case of the hydrogen molecule at room temperature the populations of the rotational levels with/ = 1, 3, 5, and 7 are in the ratio 66:9:0.08:8 X 10~5, so that observation of the S o {3) and S Q (5) transitions in the course of RSTRS is possible only when the relevant levels are filled. This can be ensured either by stimulated Raman scattering or with the aid of biharmonic pumping.…”

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Observation of the rotational spectrum of molecular hydrogen under stimulated Raman scattering conditions

Angelov¹,

Venkin²,

Esikov³

et al. 1984

Sov. J. Quantum Electron.

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An experimental investigation was made of simultaneous excitation of purely rotational S 0 (l), S o (3), and S o (5) transitions in the orthohydrogen molecule (T = 300 K) under stimulated Raman scattering conditions. More accurate values were found of the coefficients in the expansion of the energy of the rotational terms of the H 2 molecule in powers of the rotational quantum number/of the ground vibrational state. The observed complex scattering spectrum was accounted for by biharmonic pumping in stimulated Raman scattering.

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“…(2) applies also to the lines which appear as a result of a four-photon parametric interaction involving these transitions. 7 The hydrogen molecule can be described by the rigid rotator model corresponding to Eq. (3) and we can then distinguish the lines that appear as a result of stimulated scattering or parametric scattering.…”

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confidence: 99%