RSS icon
Twitter icon
Facebook icon
Vimeo icon
YouTube icon

Competition between factors determining bright versus dark atomic states within a laser mode

TitleCompetition between factors determining bright versus dark atomic states within a laser mode
Publication TypeJournal Article
Year of Publication2020
AuthorsB. Hemingway, T.. G. Akin, S. Peil, and
JournalPhys. Rev. A
Volume101
Pagination053410
Date PublishedMAY 7
Type of ArticleArticle
ISSN2469-9926
Abstract

We observe bimodal fluorescence patterns from atoms in a fast atomic beam when the laser excitation occurs in the presence of a magnetic field and the atoms sample only a portion of the laser profile. 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 J' = 0 system, and the strength of an applied magnetic field 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 field or laser intensity at a specific location.

DOI10.1103/PhysRevA.101.053410