The dependence of the absorption coefficient for vibration—rotation transitions on ruby-laser pulse intensity and polarization has been investigated experimentally. For linearly polarized radiation, a decrease in absorption is observed as the intensity is increased. For circularly polarized radiation, no decrease is evident, even at significantly higher intensity. A qualitative interpretation of the results is presented.
© 1984 Optical Society of America
V. E. Zuev, Yu. N. Ponomarev, and B. A. Tikhomirov, "Dependence of the absorption coefficient of vibration-rotation transitions of dipole molecules on the resonance radiation polarization," Opt. Lett. 9, 490-492 (1984)