Rotational control within optical tweezers by use of a rotating aperture

被引：97

作者：

O'Neil, AT ^{[1
]}

Padgett, MJ ^{[1
]}

机构：

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

来源：

OPTICS LETTERS | 2002年 / 27卷 / 09期

关键词：

D O I：

10.1364/OL.27.000743

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate a simplified method of rotational control of objects trapped within optical tweezers that does not require high-order modes, interferometric precision, or computer-controlled optical modulators. Inserting a rectangular aperture into the optical beam results in a focused spot that also has rectangular symmetry. We show that an asymmetric object trapped in the beam has its angular orientation fixed such that rotation of the aperture results in a direct rotation of the particle. (C) 2002 Optical Society of America.

引用

页码：743 / 745

页数：3

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