Power dependence of the coherent population trapping resonances at different registration

Sanka Gateva; Emilia Alipieva; Elena Taskova

doi:10.1117/12.618442

22 April 2005 Power dependence of the coherent population trapping resonances at different registration

Sanka Gateva, Emilia Alipieva, Elena Taskova

Proceedings Volume 5830, 13th International School on Quantum Electronics: Laser Physics and Applications; (2005) https://doi.org/10.1117/12.618442
Event: 13th International School on Quantum Electronics: Laser Physics and Applications, 2004, Bourgas, Bulgaria

Abstract

The investigation of the coherent population trapping (CPT) resonance on the degenerate two-level system of the (F_g=2→F_e=1) transition of the ⁸⁷Rb D₁ line by means of Hanle effect configuration in an uncoated vacuum cell (Opt. Lett. 28, 1817, 2003), has shown that the measured in fluorescence resonance has a complex shape: a very narrow (about 1mG) resonance superimposed on a broader one (about few tens mG). In this work the narrow and wide CPT resonances are registered in fluorescence, transmitted light and Faraday rotation. The dependence of the CPT resonances structures width and amplitude are measured at different laser power densities when the registration was in fluorescence and transmission. While the narrow resonance width doesn't change in the limits of the accuracy of our measurements, the wide resonance width dependence is complex and it is different in fluorescence and transmission. The origin of the observed dependencies and the differences between CPT signals observed in fluorescence and transmission are discussed.

Citation Download Citation

Sanka Gateva, Emilia Alipieva, and Elena Taskova "Power dependence of the coherent population trapping resonances at different registration", Proc. SPIE 5830, 13th International School on Quantum Electronics: Laser Physics and Applications, (22 April 2005); https://doi.org/10.1117/12.618442

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