Cold atom temperature estimate based on Raman pump-probe spectroscopy

Abstract

Abstract: A scheme is proposed to obtain the cold atom temperature by using atomic absorption spectrometry obtained by Raman pump-probe technique, and the proposed scheme is applied to the magneto-optical trap of 85Rb atoms. In the experiment, the stimulated Raman transition of atoms occurs as the trapping and probe lasers interact with the cold atoms simultaneously. Dispersion-like peak of sub-natural linewidth is generated. By fitting the dispersion-like peak with the theoretical model, the temperature of trapped cold 85Rb atoms are estimated, which is about 230 . Compared with the time-of-flight measurement method, the scheme provides a relatively simple method to estimate cold atom temperature.

Key words: quantum optics; cold atom temperature; pump-probe spectroscopy; magneto-optical trap; Doppler broadening

CLC Number:

O431.2

CHENG Yong1,2,3, TAN Zheng 1,2, WANG Jin 1,2, ZHAN Mingsheng1,2. Cold atom temperature estimate based on Raman pump-probe spectroscopy[J]. J4, 2017, 34(1): 36-39.

References

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