Chinese Journal of Optics and Applied Optics

Calculation of AC Stark shift of 5S_(1/2) and 5P_(3/2) states of Rb atoms in optical dipole trap

Junmin Wang

Published Jan 1, 2010• 1 citation

Abstract

Based on the two-level and multi-level models,the AC Stark shift of the 5S1/2 and 5P3/2 states of 87Rb atoms in an Optical Dipole Trap(ODT) formed by a strongly-focused single Gaussian laser beam is analyzed and calculated.For performance of molasses cooling of 87Rb atoms in the Far-off-resonance Trap(FORT) by 852 nm Gaussian laser beam,the AC Stark shift of 5S1/2F=2-5P3/2F′=3 cycling transition for cooling is also calculated,results show that the frequency shift has an important impact on the molasses cooling process.Furthermore,the AC Stark shift of 87Rb 5S1/2|F=2,mF=±2〉 and 5P3/2|F′=3,mF=±3〉 states versus the wavelength of the ODT laser is analyzed,which shows that there is no magic wavelength for 5S1/2-5P3/2 transition of 87Rb atoms in the red-off-resonance condition.

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