Decelerating a pulsed subsonic molecular beam by a quasi-cw optical lattice: 3D Monte-Carlo simulations
Decelerating a pulsed subsonic molecular beam by a quasi-cw optical lattice: 3D Monte-Carlo simulations
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通过准连续波光学晶格减速脉冲亚音速分子束：3D 蒙特卡罗模拟
DOI：
10.1016/j.optcom.2012.06.092
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发表时间：
2013-01
期刊：
影响因子：
--
通讯作者：
Jianping Yin
中科院分区：
文献类型：
--
作者：
Xiang Ji;Yaling Yin;Qi Zhou;Zhenxia Wang;Jianping Yin
提出了一种利用多级光学斯塔克减速器实现脉冲亚音速分子束减速的实用方案（即，一维准连续波腔增强光学晶格），它由两个几乎反向传播的、时变的、红色失谐的光场组成，强度为108 Wcm − 2。采用三维蒙特-卡罗方法研究了分子慢化效应与入射分子束的同步相位角、减速级数、初始中心速度以及腔增强因子和腔长的关系。我们的研究表明，所提出的减速器不仅可以将脉冲亚音速束从240 m/s减速到静止，而且由于我们的多级光学斯塔克减速器的聚束效应，还可以获得温度为几μK的超冷分子包，相应的冷分子分数为10 - 4-10 - 6，这在很大程度上取决于同步相位角，腔增强因子和入射分子束的初始中心速度等。
We propose a practical scheme to realize the deceleration of a pulsed subsonic molecular beam by using a multistage optical Stark decelerator (i.e., a 1D quasi-cw, cavity-enhanced optical lattice), which is composed of two nearly counter-propagating, time-varying, red-detuned, light fields with an intensity of ∼108Wcm−2in a folded ring resonator. The dependences of the molecular slowing effects on the synchronous phase angle, the deceleration-stage number and the initial central velocity of incident molecular beam as well as the cavity enhancement factor and its cavity length are investigated by the 3D Monte-Carlo method. Our study shows that the proposed decelerator cannot only be used to slow a pulsed subsonic beam from 240m/s to standstill, but also to obtain a ultracold molecular packet with a temperature of a few μK due to the bunching effect of our multistage optical Stark decelerator, and the corresponding fraction of cold molecules is 10−4–10−6, which strongly depends on the synchronous phase angle, the cavity enhancement factor and the initial central velocity of incident molecular beam, etc..
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影响因子：
2.9
作者：
P. Barker;M. Shneider
通讯作者：
P. Barker;M. Shneider
影响因子：
2.9
作者：
N. Vanhaecke;U. Meier;M. Andrist;B. Meier;F. Merkt
通讯作者：
N. Vanhaecke;U. Meier;M. Andrist;B. Meier;F. Merkt
影响因子：
19.6
作者：
R. Fulton;A. Bishop;M. Shneider;P. Barker
通讯作者：
R. Fulton;A. Bishop;M. Shneider;P. Barker
影响因子：
4.4
作者：
D. Clary
通讯作者：
D. Clary
影响因子：
8.6
作者：
DeMille, D
通讯作者：
DeMille, D