Orientation of a molecular gas by resonance radiation, optical detection, and their applications in laser spectroscopy

The results are reported of an investigation of resonant optical detection in molecular gases. An analysis is made of the mechanisms responsible for the additional permittivity and static polarization of a gas under the action of resonance radiation and a static electric field. Resonant optical detection of OsO₄ and SF₆ molecules, pumped by CO₂ laser radiation, was observed experimentally.