Frequency tuning of the optical delay in cesiumD2line including hyperfine structure

Abstract

The frequency dependence of optical delays in both the wings and core of the cesium $6 {}^{2}{S}_{1/2}\ensuremath{-}6 {}^{2}{P}_{3/2}$ transition have been observed and modeled with a Voigt line shape convolved with the six hyperfine components. Tunable delays of $0\ensuremath{-}37$ ns are achieved by tuning the laser frequency through resonance at various vapor pressures of $0.15\ensuremath{-}5.28$ mTorr.