Nonlinear Forward Scattering in Cesium Vapor: Experiment with Simultaneous Scanning of Laser Frequency and B-Field

Abstract

We present the results of an experimental study of nonlinear magneto-optical rotation in a buffer-gas-free uncoated Cs cell on hyperfine transitions Fg = 3 → Fe = 2, 3, 4 of the D2 line at high laser irradiance (up to 40 mW/cm2). The measurements were done in a forward scattering configuration, with simultaneous linear scanning of laser frequency and magnetic field at different temporal rates. The latter revealed, in a single measurement, the dependences of maximum nonlinear Faraday signal and the corresponding B-field on the laser frequency within the Doppler profile.