title: Spectral measurement of the caesium D(2) line with a tunable heterodyne interferometer.
abstract: The optical properties of a caesium atomic beam driven on a resonant hyperfine transition in the D(2) line were studied as a function of the probe laser frequency. Using a third off-resonant laser system, a heterodyne interferometer allowed simultaneous absorption and phase shift measurements of either the probe or the coupling laser. The signal features of the probe and coupling laser transmitted intensities showed strong differences in the vicinity of the hyperfine transitions excited by the probe laser. Regular absorption signals and electromagnetically induced transparency were found in either transmitted intensities. Furthermore, light induced birefringence of the probe laser was measured.
authors.affiliation: Max-Planck-Institut für Gravitationsphysik, Albert-Einstein-Institut, Hannover and Institut für Atom- und Molekülphysik, Universität Hannover, Callinstrasse 38, D-30167 Hannover, Germany. Luca.Spani.Molella@aei.mpg.de
authors.forename: Luca
authors.initials: L
authors.lastname: Spani Molella
authors.forename: Rolf-Hermann
authors.initials: RH
authors.lastname: Rinkleff
authors.forename: Karsten
authors.initials: K
authors.lastname: Danzmann
mesh_terms: D001696:Biomechanical Phenomena; D002586:Cesium / Q000032:analysis*; D007368:Interferometry / Q000295:instrumentation*; D007834:Lasers
chemical_list: D002586:Cesium