激光冷却对原子束准直的分析。

Analysis of atomic beam collimation by laser cooling.

作者信息

Li Shangyan, Zhou Min, Xu Xinye

机构信息

State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, 200062, China.

出版信息

Sci Rep. 2018 Jul 2;8(1):9971. doi: 10.1038/s41598-018-28218-y.

DOI:10.1038/s41598-018-28218-y

PMID:29967472

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6028633/

Abstract

The collimation of a thermal atomic ytterbium beam utilizing a two-dimensional optical molasses is analysed by employing the Monte Carlo simulation. The dependencies of the collimation efficiency on power, frequency detuning and beam size of the laser are studied for various conditions, especially for the case of an imbalanced laser intensity and an impure laser polarization. The influences of these imperfect factors are discussed, and the lowest transverse temperature by the collimation in the experiment is evaluated.

摘要

利用蒙特卡罗模拟分析了采用二维光学糖浆对热原子镱束的准直情况。研究了在各种条件下，特别是在激光强度不平衡和激光偏振不纯的情况下，准直效率对激光功率、频率失谐和光束尺寸的依赖性。讨论了这些不完善因素的影响，并评估了实验中通过准直得到的最低横向温度。