Orbital angular momentum transfer in helical Mathieu beams

被引：51

作者：

López-Mariscal, C

Gutiérrez-Vega, JC

Milne, G

Dholakia, K

机构：

[1] Technol Monterrey, Photon & Math Opt Grp, Monterrey 64849, Mexico

[2] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland

来源：

OPTICS EXPRESS | 2006年 / 14卷 / 09期

关键词：

D O I：

10.1364/OE.14.004182

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We observe the transfer of orbital angular momentum to trapped particles in the azimuthally asymmetric transverse intensity distribution of a helical Mathieu beam. The average rotation rate, instantaneous angular displacement and terminal velocity of the trapped particles are measured experimentally. The angular dependence of these parameters is found to be in good agreement with the variation of the optical gradient force, the transfer of OAM from the wavefield and the Stokes drag force. (c) 2006 Optical Society of America

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页码：4182 / 4187

页数：6

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