LINE-INTENSITIES IN V-TYPE POLARIZATION LABELING SPECTROSCOPY OF DIATOMIC-MOLECULES

The paper presents general rules governing the intensity factors in V- type optical double-resonance polarization labelling spectroscopy. The patterns of polarization labelling spectra are investigated for each particular combination of rotational quantum numbers in (1) Sigma-(1) Sigma and (1) Pi-(1) Sigma electronic transitions and for circularly a nd linearly polarized pump laser beam. The predicted intensity distrib utions are compared with experimental data obtained for K-2 and Na-2 m olecules at B-1 Pi(u)<--X-1 Sigma(g)(+) probe, C-1 Pi(u)<--X-1 Sigma(g )(+) and A(1) Sigma(u)(+)<--X-1 Sigma(g)(+) pump transitions, respecti vely. The obtained results show a way to optimize the polarization lab elling method by making use of the whole variety of factors affecting the intensity distribution. (C) 1997 Elsevier Science Ltd.