SPECTRAL CHARACTERISTICS OF THE SF6 MOLECULES EXCITATION BY A STRONG IR LASER FIELD AT CONTINUOUSLY TUNED RADIATION FREQUENCY

The frequency dependence of the energy absorbed by the lower vibration levels system in SF6 has been investigated using a pulsed high pressure CO2-laser continuously tuned over frequency domain. The absorption of these molecules in the intense IR laser field has been experimentally found to have well developed contrast absorption features. Two-photon absorption players an important role in the absorption spectrum structure formation. The observed spectral structure gives evidence on the strong anharmonicity splitting of the SF6 molecule v3 mode degenerated states. © 1979.