Open system CPT with spatially separated pump and probe beams

B. M. Jelenković; D. Arsenović; Z. Grujić; M. Radonjić; M. Mijailović

doi:10.1117/12.822450

19 December 2008 Open system CPT with spatially separated pump and probe beams

B. M. Jelenković, D. Arsenović, Z. Grujić, M. Radonjić, M. Mijailović

Proceedings Volume 7027, 15th International School on Quantum Electronics: Laser Physics and Applications; 70270D (2008) https://doi.org/10.1117/12.822450
Event: 15th International School on Quantum Electronics: Laser Physics and Applications, 2008, Bourgas, Bulgaria

Abstract

We calculated line-shapes of the coherent population trapping (CPT) for the open transition in ⁸⁷Rb by solving time-dependent optical Bloch equations and averaging results for the total excited state populations over atomic trajectories and velocities, while taking into account incident angles to the laser beam. Comparison with experiment produces good agreement for the laser intensity dependence of the CPT line-widths when the laser transverse beam profile is Gaussian. This theoretical model was used to calculate the probe laser CPT in the case of spatially separated pump beam. The probe beam is placed inside the cylindrically-shaped pump beam. The calculations as well as measurements show narrowing of the Hanle resonance due to Ramsey effect.

Citation Download Citation

B. M. Jelenković, D. Arsenović, Z. Grujić, M. Radonjić, and M. Mijailović "Open system CPT with spatially separated pump and probe beams", Proc. SPIE 7027, 15th International School on Quantum Electronics: Laser Physics and Applications, 70270D (19 December 2008); https://doi.org/10.1117/12.822450

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