Effect of collisions on the shape of the coherent population trapping resonance detected by the Ramsey method

被引：2

作者：

Voloshin, G. V. ^{[1
]}

Barantsev, K. A. ^{[1
]}

Litvinov, A. N. ^{[1
]}

机构：

[1] Peter Great St Petersburg Polytech Univ, Polytekhn Skaya Ul 29, St Petersburg 195251, Russia

来源：

QUANTUM ELECTRONICS | 2020年 / 50卷 / 11期

基金：

俄罗斯基础研究基金会;

关键词：

coherent population trapping; pulsedpumping; gas cell; alkali atoms; moving atoms; INVERSION; LINE; INTERFERENCE; TRANSITIONS; EXCITATION; LASERS; VAPOR; RAMAN;

D O I：

10.1070/QEL17064

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report on a theoretical model of the effect of coherent population trapping in alkali atoms in an optically thin gas cell with a buffer gas at a nonzero temperature in a pulsed laser field. The shape of the Ramsey resonance is analysed for two different temperature ranges, i.e. for a 'cold' atomic ensemble and for an ensemble of 'hot' atoms in a cell with a buffer gas. The influence of the hyperfine structure of the excited level on the shift of the central Ramsey resonance is investigated.

引用

页码：1023 / 1028

页数：6

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