We present a detailed study of the effect of a strong and circularly polarized coupling beam on a probe beam locked to a hyperfine transition of the rubidium ${D}_{2}$ manifold. Experiments were carried out in the co- and counterpropagating configurations. Counterpropagating beams are used to study the effect of the probe beam intensity on absorption and polarization spectra. These data are compared with results of a rate-equation calculation. The absorption spectra show very clear indication of saturation, with different saturation intensities for each atomic line. The slope of the dispersionlike profile of the polarization signal increases with the intensity of the probe beam. These results are in very good agreement with the calculation. Experimental absorption and polarization spectra in the copropagating configuration are also well reproduced by the rate-equation calculation. The dispersion profiles in the polarization signal can be used to lock the coupling laser frequency at well defined frequencies.We present a detailed study of the effect of a strong and circularly polarized coupling beam on a probe beam locked to a hyperfine transition of the rubidium ${D}_{2}$ manifold. Experiments were carried out in the co- and counterpropagating configurations. Counterpropagating beams are used to study the effect of the probe beam intensity on absorption and polarization spectra. These data are compared with results of a rate-equation calculation. The absorption spectra show very clear indication of saturation, with different saturation intensities for each atomic line. The slope of the dispersionlike profile of the polarization signal increases with the intensity of the probe beam. These results are in very good agreement with the calculation. Experimental absorption and polarization spectra in the copropagating configuration are also well reproduced by the rate-equation calculation. The dispersion profiles in the polarization signal can be used to lock the coupling laser frequency at well defined frequencies.

Physical Review AApr 7, 20147 citations

Calculation and Measurement of Absolute Transmission in Rubidium

Seo Ro Shin, Heung‐Ryoul Noh

We present an experimental and theoretical study of the transmission of a π (or σ + ) polarized laser beam for a Doppler broadened rubidium vapor cell. The transmission of the laser beam for the D 2 transition line of 85 Rb atoms was measured as a function of the laser frequency for various laser intensities. The observed spectra were compared with calculation, taking into account both the Gaussian beam profile and the fact that atoms were measured while crossing the laser beam. We found excellent agreement between the experimental and calculated results. We also investigated different operating mechanisms of variation of transmission for each transition line.We present an experimental and theoretical study of the transmission of a π (or σ + ) polarized laser beam for a Doppler broadened rubidium vapor cell. The transmission of the laser beam for the D 2 transition line of 85 Rb atoms was measured as a function of the laser frequency for various laser intensities. The observed spectra were compared with calculation, taking into account both the Gaussian beam profile and the fact that atoms were measured while crossing the laser beam. We found excellent agreement between the experimental and calculated results. We also investigated different operating mechanisms of variation of transmission for each transition line.

Journal of the Physical Society of JapanAug 10, 200914 citations

We present a detailed study of the effect of a strong and circularly polarized coupling beam on a probe beam locked to a hyperfine transition of the rubidium

{D}_{2}

manifold. Experiments were carried out in the co- and counterpropagating configurations. Counterpropagating beams are used to study the effect of the probe beam intensity on absorption and polarization spectra. These data are compared with results of a rate-equation calculation. The absorption spectra show very clear indication of saturation, with different saturation intensities for each atomic line. The slope of the dispersionlike profile of the polarization signal increases with the intensity of the probe beam. These results are in very good agreement with the calculation. Experimental absorption and polarization spectra in the copropagating configuration are also well reproduced by the rate-equation calculation. The dispersion profiles in the polarization signal can be used to lock the coupling laser frequency at well defined frequencies.