Single-scan polarization-resolved degenerate four-wave mixing spectroscopy using a vector optical field

Abstract

We report on a new method to achieve the single-scan polarization-resolved degenerate four-wave mixing (DFWM) spectroscopy in a Rb atomic medium using a vector optical field, in which two pump beams are kept linearly polarized and a vector beam is employed as the probe beam. As the polarization and intensity of the DFWM signal are closely dependent on the polarization state of the probe beam, a vector probe beam with space-variant states of polarization is able to generate a DFWM signal with space-variant states of polarization and intensity across the DFWM image. Accordingly, the polarization-resolved spectra can be retrieved from a single DFWM image. To the best of our knowledge, this is the first time that the single-scan polarization-resolved spectrum detection has been realized experimentally with a vector beam. This work provides a simple but efficient single-scan polarization-resolved spectroscopic method, which would be of great utility for the samples of poor light stability and fast optical processes.

A Study of Ramsey Interference and Spectral Line Locking Technique Based on Rubidium-87 Cold Atoms

“…The frequency of ECDL1 is then locked by exploiting the spectral hole-burning effect, establishing a reference frequency for the system. [12] After stabilization, the ECDL1 and ECDL2 are superimposed to generate a beat frequency. This beat frequency signal is transformed into a voltage signal via a frequency-to-voltage converter (FVC) module and manually locked using a master computer system.…”

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

“…15) In our previous work, we achieved single-scan polarization-resolved degenerate four-wave mixing (DFWM) by taking advantage of the nonuniform polarization distribution of vector optical beams. 16) As a vector probe beam with space-variant states of polarization is able to generate DFWM signal with spacevariant states of polarization and intensity across the DFWM image, the polarization-resolved spectroscopy can be retrieved from a single DFWM signal image.…”