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Cavity linewidth narrowing by means of electromagnetically induced transparency in Rb with a longitudinal magnetic field
Affiliation:[1]Department of Physics, East China University of Science and Technology, Shanghai 200237, China; [2]Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Abstract:We demonstrate a method for further reducing the cavity linewidth by the application of a small longitudinal magnetic field on the Rb cell. Because of the magnetic field multiple electromagnetically induced transparencies(EITs) are observed. The center EIT linewidth is measured as a function of the magnetic field. By utilizing the center EIT we narrow the cavity linewidth to 2 MHz which is half of the cavity linewidth without magnetic field.
Keywords:270.1670  300.3700  260.2030  020.7490
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