LIGHT-INDUCED TORQUE ON MOVING ATOMS

被引：167

作者：

BABIKER, M ^{[1
]}

POWER, WL ^{[1
]}

ALLEN, L ^{[1
]}

机构：

[1] UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,BLACKETT LAB,OPT SECT,LONDON SW7 2BZ,ENGLAND

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.73.1239

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that a two-level atom moving in a Laguerre-Gaussian beam is subject to a light-induced torque, T, about the beam axis which is directly proportional to l, the orbital angular momentum quantum number of the mode. The torque, which has a Lorentzian frequency response which includes an azimuthal l-dependent Doppler shift in the detuning term, reduces in the saturation limit to the simple form T almost-equal-to HBARlGAMMA, where 2GAMMA is the decay rate of the excited state.

引用

页码：1239 / 1242

页数：4

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