AZIMUTHAL DOPPLER-SHIFT IN LIGHT-BEAMS WITH ORBITAL ANGULAR-MOMENTUM

被引：104
作者：
ALLEN, L [1 ]
BABIKER, M [1 ]
POWER, WL [1 ]
机构：
[1] UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,BLACKETT LAB,OPT SECT,LONDON SW7 2BZ,ENGLAND
来源：
OPTICS COMMUNICATIONS | 1994年 / 112卷 / 3-4期
关键词：
Atoms - Doppler effect - Frequencies - Quantum optics - Resonance;
D O I：
10.1016/0030-4018(94)00484-6
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We show that an atom moving in a light beam with orbital angular momentum experiences an azimuthal shift in the resonant frequency in addition to the usual axial Doppler and recoil shifts. For a Laguerre-Gaussian beam characterised by an orbital angular momentum quantum number l, the shift is lV(phi)/r where r is the radial atomic position and V-phi the azimuthal component of velocity. The predicted shift could play a significant role in interactions between atoms and standing light fields in cooling experiments as well as in ion traps.
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收藏
页码：141 / 144
页数：4
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