19 December 2008 Line shapes and widths of CPT resonances: effect of laser beam profile in open atomic system
Author Affiliations +
Proceedings Volume 7027, 15th International School on Quantum Electronics: Laser Physics and Applications; 70270N (2008) https://doi.org/10.1117/12.822462
Event: 15th International School on Quantum Electronics: Laser Physics and Applications, 2008, Bourgas, Bulgaria
Abstract
This work is concerned with the line profiles, amplitudes and widths of the coherent population trapping (CPT) resonances due to low frequency Zeeman coherences, in the Hanle configuration, applied to 87Rb atoms in the vacuum cell. Detailed calculations of the fluorescence were done with two different transverse intensity profiles of the excitation laser tuned to the open Fg = 2 → Fe = 1 transition. Comparison with experiment produces good agreement for the laser intensity dependence of CPT line-widths in the wide range of the laser intensity, when the laser transverse beam profile is Gaussian. Results for both step-like and Gaussian profile of the laser beam show asymptotic 1/√d dependence (d is the laser beam diameter) of CPT line-widths, for large range of the laser intensity.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. Radonjić, D. Arsenović, Z. Grujić, B. M. Jelenković, "Line shapes and widths of CPT resonances: effect of laser beam profile in open atomic system", Proc. SPIE 7027, 15th International School on Quantum Electronics: Laser Physics and Applications, 70270N (19 December 2008); doi: 10.1117/12.822462; https://doi.org/10.1117/12.822462
PROCEEDINGS
9 PAGES


SHARE
Back to Top