Journal
OPTICS LETTERS
Volume 37, Issue 1, Pages 118-120Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.37.000118
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- Durham University
- UK Engineering and Physical Sciences Research Council
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We demonstrate polarization spectroscopy of an excited state transition in room-temperature cesium vapor. An anisotropy induced by a circularly polarized pump beam on the D2 transition is observed using a weak probe on the 6P(3/2) -> 7(S1/2) transition. At high pump power, a subfeature due to Autler-Townes splitting is observed that theoretical modeling shows is enhanced by Doppler averaging. Polarization spectroscopy provides a simple modulation-free signal suitable for laser frequency stabilization to excited state transitions. (C) 2012 Optical Society of America
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