Competition between Factors Determining Bright versus Dark Atomic States within a Laser Mode
| Autor: | Steven Peil, James V. Porto, T. G. Akin, Bryan Hemingway |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
Work (thermodynamics) Atomic Physics (physics.atom-ph) Mode (statistics) FOS: Physical sciences Laser 01 natural sciences Fluorescence Article 010305 fluids & plasmas law.invention Magnetic field Physics - Atomic Physics Dark state law 0103 physical sciences Physics::Atomic Physics Atomic physics 010306 general physics Excitation Intensity (heat transfer) |
| Zdroj: | Phys Rev A (Coll Park) |
| ISSN: | 2469-9926 |
| Popis: | 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 ${J}^{\ensuremath{'}}=0$ 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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