Dynamics analysis of microsphere in a dual-beam fiber-optic trap with transverse offset

被引：38

作者：

Chen, Xinlin ^{[1
]}

Xiao, Guangzong ^{[1
,2
]}

Luo, Hui ^{[1
]}

Xiong, Wei ^{[1
]}

Yang, Kaiyong ^{[1
]}

机构：

[1] Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Hunan, Peoples R China

[2] Chinese Acad Sci, State Key Lab Transient Opt & Photon, Xian 710068, Peoples R China

来源：

OPTICS EXPRESS | 2016年 / 24卷 / 07期

关键词：

INDUCED ROTATION; PARTICLES; FORCES; LIGHT;

D O I：

10.1364/OE.24.007575

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A comprehensive dynamics analysis of microsphere has been presented in a dual-beam fiber-optic trap with transverse offset. As the offset distance between two counterpropagating beams increases, the motion type of the microsphere starts with capture, then spiral motion, then orbital rotation, and ends with escape. We analyze the transformation process and mechanism of the four motion types based on ray optics approximation. Dynamic simulations show that the existence of critical offset distances at which different motion types transform. The result is an important step toward explaining physical phenomena in a dual-beam fiberoptic trap with transverse offset, and is generally applicable to achieving controllable motions of microspheres in integrated systems, such as microfluidic systems and lab-on-a-chip systems. (C) 2016 Optical Society of America

引用

页码：7575 / 7584

页数：10

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