Optical Conveyors: A Class of Active Tractor Beams

被引：210
作者：
Ruffner, David B. [1 ]
Grier, David G.
机构：
[1] NYU, Dept Phys, New York, NY 10003 USA
来源：
PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 16期
基金：
美国国家科学基金会;
关键词：
TRACKING; FORCE;
D O I：
10.1103/PhysRevLett.109.163903
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We experimentally demonstrate a class of tractor beams created by coherently superposing coaxial Bessel beams. These optical conveyors have periodic intensity variations along their axes that act as highly effective optical traps for micrometer-scale objects. Trapped objects can be moved selectively upstream or downstream along the conveyor by appropriately changing the Bessel beams' relative phase. The same methods used to project a single optical conveyor can project arrays of independent optical conveyors, allowing bidirectional transport in three dimensions.
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页数：5
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