Circular Polarization Spectroscopy: Disorientation Cross-Section in the ^133Cs 6p^2 P3/2 Level by Using Two-Photon Two-Color Nano-Second Pulsed Laser
We have experimentally investigated the disorientation cross-section of the cesium J = 3/2 excited-level atom by using two-photon two-color nano-second pulsed dye lasers in the presence of argon buffer gas. Alignment and orientation in the 6p^2 P3/2 level were produced with a circularly polarized light. The circular polarization degree was measured with the pump ( ? = 852.112 nm ) and probe laser ( ? = 603.409 nm ) to obtain disorientation cross-section in the 6p^2 P3/2 level cesium due to collision with the ground level argon atoms over the Zeeman population. The disorientation cross-section was extracted, using non-linear square fit, from the measured circular polarization spectra as a function of argon gas pressure. We obtained the value of disorientation cross-section as 151(42) °A^2 which matches with the theory.
School Location:USA - Ohio
Source Type:Master's Thesis
Keywords:circular polarization spectrum alignment orientation
Date of Publication:01/01/2007