Simultaneous trapping of high and low refractive index particles using a single-fiber optical trap with coexisting LP01 and LP11 modes

被引:4
|
作者
Dang, Yuting [1 ]
Chen, Peng [1 ]
Zhong, Hui [1 ]
Wu, Hao [1 ]
Wang, Weicheng [1 ]
Jiang, Chunlei [1 ]
Gao, Bingkun [1 ]
机构
[1] Northeast Petr Univ, Coll Elect & Informat Engn, Daqing 163318, Peoples R China
关键词
MANIPULATION;
D O I
10.1364/OL.479190
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We propose and demonstrate a fiber optical trap based on the coexistence of LP01 and LP11 modes for the simultaneous trapping of both high refractive index particles and low refractive index particles. Since different mode beams have different propagation constants, they exhibit different focused light fields. We fabricated a tapered fiber probe using thermal fusion to converge the beam, which generates a strong gradient force field near the fiber tip, as well as a dark trap along the axial direction. High refractive index particles are attracted near the fiber tip by a strong gradient force, and low refractive index particles are trapped in the dark cage along the axial direction. The proposed optical trap, which can simultaneously trap particles with different refractive indices, makes it easier to manipulate cells or molecules with different properties and explore multi-molecule interactions, which can facilitate research related to biology and chemistry. (c) 2023 Optica Publishing Group
引用
收藏
页码:530 / 533
页数:4
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