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Title: Extra sub-Doppler lines in the vicinity of the third-resonance 6S-8P transition of atomic Cs attributed to optically induced Cs dimers

We report on the observation of additional sub-Doppler lines in a saturated absorption experiment when exploring the vicinity of the 6S{sub 1/2}-8P{sub 3/2} transition of Cs ({lambda}=388 nm). These additional lines are observed only under a relatively strong irradiation of both the pump and the probe beams. Extra narrow lines are also observed in copropagating nonlinear spectroscopy, and around the lines of the V-type three-level system 8P{sub 3/2}-6S{sub 1/2}-8P{sub 1/2} ({lambda}{sub 1}=388 nm, {lambda}{sub 2}=389 nm). We attribute theses additional lines to a probing of high-lying molecular cesium, produced as a result of the optical excitation of Cs atoms, as the low Cs atom density ({<=}10{sup 12}cm{sup -3}) is unable to populate significantly the dimer states in the condition of thermal equilibrium.
Authors:
; ; ; ;  [1]
  1. Laboratoire de Physique des Lasers, Institut Galilee, Universite Paris 13, Villetaneuse, UMR 7538 du CNRS, 99 AvenueJ.B. Clement, F-93430 Villetaneuse (France)
Publication Date:
OSTI Identifier:
21544645
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 83; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevA.83.043402; (c) 2011 American Institute of Physics
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ABSORPTION; ATOMS; BEAMS; CESIUM; DIMERS; DOPPLER BROADENING; ENERGY-LEVEL TRANSITIONS; EXCITATION; IRRADIATION; MOLECULES; NONLINEAR PROBLEMS; RESONANCE; SPECTROSCOPY; THERMAL EQUILIBRIUM ALKALI METALS; ELEMENTS; ENERGY-LEVEL TRANSITIONS; EQUILIBRIUM; LINE BROADENING; METALS; SORPTION