Optics Letters · 1983 · 23 citations · 12 references
Natural SciencesChemistryPhysicsAtomic PhysicsOpticsSpectroscopyAbsorption SpectroscopyAtomic SpectroscopyAtomic TransitionsIsotope ShiftsLaser SpectroscopyOptical SpectroscopyAbsorption SpectraAtomic Transition FrequenciesDoppler-free SpectroscopyHyperfine Transition FrequenciesIsotope Shift MeasurementsIsotope Shift SpectroscopyTwo-photon SpectroscopyTwo-photon Transitions
Frequency-modulation spectroscopy was employed successfully to measure the Doppler-free absorption and dispersion signals originating from several two-photon transitions in (85)Rb and (87)Rb. The two-photon cross section of the hyperfine transition 5S(1/2) (F = 2) ? 5D(5/2) (F = 4) in (87)Rb was determined to be sigma((2)) asymptotically equal to 4 x 10(-20) cm(4)/W. The transition isotope shift (TIS) of the transition 5S(1/2) ? 5D(5/2) between (87)Rb and (85)Rb was found to be Deltanu(TIS) = +166 +/- 2 MHz.
12