title: Pulsed ac Stark shifts monitored by Raman Ramsey fringes in sodium vapor.
abstract: We have employed Raman Ramsey fringes (RRFs) in sodium vapor to measure ac Stark shifts of the hyperfine levels by an off-resonant shift laser pulse. The ac Stark shifts are directly monitored by the RRF peak shifts and are proportional to the power and the pulse width and antiproportional to the detuning frequency of the shift laser. These findings endorse RRFs to be a strong tool for monitoring small pulsed perturbations.
authors.affiliation: Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan.
authors.forename: Nobuhito
authors.initials: N
authors.lastname: Hayashi
authors.forename: Ichiro
authors.initials: I
authors.lastname: Yoshida
authors.forename: Yoshitaka
authors.initials: Y
authors.lastname: Hoshina
authors.forename: Masaharu
authors.initials: M
authors.lastname: Mitsunaga