Transfer of orbital angular momentum to metal particles confined using optical tweezers

被引：1

作者：

O'Neil, AT ^{[1
]}

Padgett, MJ ^{[1
]}

机构：

[1] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland

来源：

LASER APPLICATIONS IN MICROELECTRONIC AND OPTOELECTRONIC MANUFACTURING VI | 2001年 / 4274卷

关键词：

orbital angular momentum; optical tweezers; Laguerre-Gaussian modes;

D O I：

10.1117/12.432508

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using Laguerre-Gaussian beams in an inverted optical tweezers geometry we observe that silver particles, 2 mum in diameter, are confined to an annulus around the outside of the beam. This annulus is situated 4 mum below the beam waist where the upward scattering force counterbalances gravity. The scattering force results in a transfer of the orbital angular momentum content of the beam to the particle causing it to rotate about the beam axis.

引用

页码：177 / 182

页数：4

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