Single-scan polarization-resolved saturated absorption spectra using hybridly polarized beam in 85Rb atomic vapor

Abstract

Abstract We report on a single-scan polarization-resolved saturated absorption spectra (SAS) method utilizing a hybridly polarized beam as the probe. Owning to the spatial-variant polarization of a hybridly polarized probe, the polarization-resolved information can be retrieved from the single signal image. Then, the polarization dependence of SAS from two transitions are investigated. Strong polarization dependence is observed from the “closed two-level transition” as |5S 1/2, F = 3> → |5P 3/2, F′ = 4> of 85Rb. By contrast, no polarization dependence is observed from “open two-level transition” as |5S 1/2, F = 3> → |5P 3/2, F′ = 3>. The method would be meaningful for the samples with poor stability or the ultrafast processes.