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arXiv · 1107.2582

Polarization spectroscopy of an excited state transition

Christopher Carr·Charles S. Adams·Kevin J. Weatherill
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Abstract

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 6P3/2 to 7S1/2 transition. When the D2 transition is saturated, a sub-natural linewidth feature is observed which 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.

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Christopher Carr, Charles S. Adams, Kevin J. Weatherill. 2011-07-26. Polarization spectroscopy of an excited state transition. https://doi.org/10.1364/ol.37.000118

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