Polarization spectroscopy to determine alignment depolarization of the atoms using a pump-probe laser technique
✍ Scribed by S. Burçin Bayram; Prakash Koirala
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 413 KB
- Volume
- 282
- Category
- Article
- ISSN
- 0030-4018
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✦ Synopsis
We have experimentally investigated alignment depolarization cross section of the excited J ¼ 3=2 133 Cs atoms, by collisions with ground level krypton atoms, from a two-photon two-color linear polarization spectra. To measure the linear polarization degree of the 6s 2 S 1=2 ! 6p 2 P 3=2 ! 10s 2 S 1=2 double-resonance transition, a nanosecond pulse pump-probe laser technique was employed. Alignment was optically induced by linear polarization of the pump laser. By analyzing the intensity of the cascade fluorescence signal, monitored from the 9p 2 P 1=2 ! 6s 2 S 1=2 transition at 361.73 nm, in the presence of Kr pressures ranging from 7 mbar to 133 mbar a depolarization cross section value of 294 ð45Þ Å 2 is obtained.