Infrared double resonance of SF6 with a tunable diode laser. II. Line shape analysis

Abstract
Two‐ and three‐level diode–infrared laser double resonance experiments in SF6 are modeled in terms of a superposition of noninteracting pairs of levels. The Mollow or Hänsch–Toschek line shape functions give a good representation of the observed spectra, with all features describable as either saturated or Stark‐modulated transitions. No evidence for intramolecular coupling is seen at v3=1 of SF6.