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Competition between Factors Determining Bright versus Dark Atomic States within aLaser Mode

Published

Author(s)

Brian Hemingway, T. G. Atkin, Steven Peil, James(Trey) Porto

Abstract

We observe bimodal uorescence patterns from atoms in a fast atomic beam when the laser excitation occurs in the presence of a magnetic eld and the atoms sample only a portion of the laser pro le. The behavior is well explained by competition between the local intensity of the laser, which tends to generate a coherent-population-trapping (CPT) dark state in the J = 1 to J0 = 0 system, and the strength of an applied magnetic eld that can frustrate the CPT process. This work is relevant for understanding and optimizing the detection process for clocks or other coherent systems utilizing these transitions and could be applicable to in situ calibration of the laser-atom interaction, such as the strength of the magnetic eld or laser intensity at a speci c location.
Citation
Physical Review A

Citation

Hemingway, B. , Atkin, T. , Peil, S. and Porto, J. (2020), Competition between Factors Determining Bright versus Dark Atomic States within aLaser Mode, Physical Review A, [online], https://doi.org/10.1103/PhysRevA.101.053410, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=929610 (Accessed April 19, 2024)
Created May 7, 2020, Updated December 6, 2022