Cesium alignment produced by pumping with unpolarized light★
Physics Department, University of Fribourg,
Chemin du Musée 3,
2 Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, P.R. China
3 University of Chinese Academy of Sciences, Beijing 100049, P.R. China
a e-mail: email@example.com
Received in final form: 19 March 2018
Published online: 30 April 2018
We demonstrate optical pumping on the four hyperfine components of the Cs D1 transition by unpolarized (UPL) resonant laser light. The evidence is based on the reduction of the absorption coefficients κ0 with increasing light power P in an uncoated Cs vapor cell with isotropic spin relaxation. For comparison we perform the same quantitative κ0(P) measurements with linearly-polarized light (LPL) and circularly-polarized light (CPL). We find that our previously published algebraic expressions give an excellent description of all experimentally recorded induced transparency signals. Based on this we can make reliable absolute predictions for the power dependence of the spin orientation and alignment produced by pumping with LPL, CPL and UPL.
Key words: Atomic Physics
Supplementary material in the form of one pdf file from the Journal web page at https://doi.org/10.1140/epjd/e2018-90107-x.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2018