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Two-photon dichroic atomic vapor laser lock using electromagnetically induced transparency and absorption

TitleTwo-photon dichroic atomic vapor laser lock using electromagnetically induced transparency and absorption
Publication TypeJournal Article
Year of Publication2009
AuthorsF. E. Becerra, R. T. Willis, S. L. Rolston, and L. A. Orozco
JournalJOSA B
Volume26
Pagination1315
Date Publishedjun
ISSN0740-3224
Keywords2009, Absorption, Coherent optical effects, Laser stabilization, Zeeman effect
Abstract

We demonstrate a technique to lock the frequency of a laser to a transition between two excited states in Rb vapor using a two-photon process in the presence of a weak magnetic field. We use a ladder configuration from specific hyperfine sublevels of the 5S1/2, 5P3/2, and 5D5/2 levels. This atomic configuration can show electromagnetically induced transparency and absorption processes. The error signal comes from the difference in the transparency or absorption felt by the two orthogonal polarizations of the probe beam. A simplified model is in good quantitative agreement with the observed signals for the experimental parameters. We have used this technique to lock the frequency of the laser up to 1.5 GHz off atomic resonance.

URLhttp://josab.osa.org/abstract.cfm?URI=josab-26-7-1315

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