Multiphoton Satellites in the Saturated-Absorption Spectrum of SiF4 Gas

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A saturated-absorption spectrum of SiF4 gas, free of Doppler broadening, has been recorded in the lasing range of a low-pressure CO2 laser. Multiplets of superfine structure are observed, which are due to the tunnel transitions between the states of molecular rotation around equivalent symmetry axes. Multiplet satel- lites are revealed, whose origin is explained by two-photon processes. Splitting of the energy levels of the super- fine structure multiplet is derived from satellite interpretation. A satellite is found, which can be caused by four- photon processes.
Original languageUndefined
Pages (from-to)190-197
JournalOptics and Spectroscopy (English translation of Optika i Spektroskopiya)
Issue number2
StatePublished - 2009

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