title: A Bell-Bloom experiment with polarization-modulated light of arbitrary duty cycle.
abstract: We report on a study of polarization-modulation experiments on the 4 → 3 hyperfine component of the D1 transition in Cs vapor contained in a paraffin-coated cell. The laser beam's polarization was switched between left- and right-circular polarization at a rate of 200 Hz. Variations of the transmitted light power were recorded while varying the amplitude of a transverse magnetic field. The power shows electromagnetically induced transparency (EIT) resonances when the atomic Larmor frequency matches a harmonic of the modulation frequency. We made a quantitative study of the resonance amplitudes with square-wave modulations of various duty cycles, and find an excellent agreement with recent algebraic model predictions.
authors.affiliation: Physics Department, University of Fribourg, Chemin du Musée 3, 1700 Fribourg, Switzerland. iliafes@gmail.com
authors.forename: I
authors.initials: I
authors.lastname: Fescenko
authors.forename: P
authors.initials: P
authors.lastname: Knowles
authors.forename: A
authors.initials: A
authors.lastname: Weis
authors.forename: E
authors.initials: E
authors.lastname: Breschi