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Dynamics of Low Density Rydberg Gases

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Author(s)
Brekke, Erik; Day, Jason O.; Walker, Thad G.
Date
Jun 09, 2008
Abstract
A state-dependent stimulated emission probe was used to investigate the coherent and dynamic properties of cold Rydberg atoms. 87Rb atoms were excited to various nl Rydberg states from a MOT via continuous two-photon excitation. A stimulated emission probe laser was then used to bring the Rydberg atoms down to the 6P3/2 state,allowing detection of decay photons as a Rydberg atom detection method. Phase-matched four-wave mixing was also achieved and the angular dependence investigated. This coherent process is optimized when detuned from the Rydberg state, giving as much as 40% phase-matched light. In addition, the stimulated emission probe technique shows that radiative processes dominate the Rydberg population dynamics on a time scale much faster than the natural radiative lifetime. Modeling suggests superradiant emission may be the dominant factor.
Description
Poster presented at DAMOP 2008.
Sponsor(s)
National Science Foundation
Permanent link
http://digital.library.wisc.edu/1793/28232 
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