Measurements and analysis of response function of cold atoms in optical molasses

被引：6

作者：

Bhar, Subhajit ^{[1
]}

Swar, Maheswar ^{[1
]}

Satpathi, Urbashi ^{[2
]}

Sinha, Supurna ^{[1
]}

Sorkin, Rafael ^{[3
]}

Chaudhuri, Saptarishi ^{[1
]}

Roy, Sanjukta ^{[1
]}

机构：

[1] Raman Res Inst, CV Raman Ave, Bangalore 560080, Karnataka, India

[2] Tata Inst Fundamental Res, Int Ctr Theoret Sci, Bangalore 560089, Karnataka, India

[3] Perimeter Inst Theoret Phys, 31 Caroline St North, Waterloo, ON N2L 2Y5, Canada

来源：

OPTICS CONTINUUM | 2022年 / 1卷 / 02期

关键词：

BROWNIAN-MOTION;

D O I：

10.1364/OPTCON.448535

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report our experimental measurements and theoretical analysis of the position response function of cold atoms in a magneto-optical trap (MOT) by applying a transient homogeneous magnetic field as a perturbing force. We observe a transition from a damped oscillatory motion to an over-damped relaxation, stemming from a competition between the viscous drag provided by the optical molasses and the restoring force of the MOT. Our observations are in agreement with the predictions of our model based on the Langevin equation. We also study the diffusion of the atomic cloud in the optical molasses and find the measured value of diffusion coefficient matching with the prediction of our theoretical model. (c) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：171 / 188

页数：18

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