Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1536030 | Optics Communications | 2013 | 9 Pages |
Abstract
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 â¼108 W cmâ2 in 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 240 m/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 10â4-10â6, which strongly depends on the synchronous phase angle, the cavity enhancement factor and the initial central velocity of incident molecular beam, etc..
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Xiang Ji, Yaling Yin, Qi Zhou, Zhenxia Wang, Jianping Yin,