Spatial light modulator-controlled alignment and spinning of birefringent particles optically trapped in an array

被引：22

作者：

Eriksen, RL ^{[1
]}

Rodrigo, PJ ^{[1
]}

Daria, VR ^{[1
]}

Glückstad, J ^{[1
]}

机构：

[1] Riso Natl Lab, Opt & Fluid Dynam Dept, DK-4000 Roskilde, Denmark

来源：

APPLIED OPTICS | 2003年 / 42卷 / 25期

关键词：

D O I：

10.1364/AO.42.005107

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate the use of a phase-only liquid-crystal spatial light modulator (SLM) for polarization-controlled rotation and alignment of an array of optically trapped birefringent particles. A collimated beam incident upon a two-dimensional lenslet array yields multiple foci,. scaled to produce optical gradient traps with efficient three-dimensional trapping potentials. The state of polarization of each trapping beam is encoded by the SLM; which acts as a matrix of wave plates with computer-controlled phase retardations. Control of the rotation frequency and alignment direction of the particles is achieved by the transfer of tunable photon spin angular momentum. (C) 2003 Optical Society of America.

引用

页码：5107 / 5111

页数：5

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