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Distinguishing the number of captured microspheres in dual-beam optical trap by measuring the back light signal
Zhou, Deyuan1; Chen, Xinlin1; Xiao, Guangzong1,2; Han, Xiang1; Jin, Shilong1; Xiao, Guangzong (xiaoguangzong@nudt.edu.cn)
2017
会议名称Applied Optics and Photonics China: Optoelectronics and Micro/Nano-Optics, AOPC 2017
会议录名称AOPC 2017: Optoelectronics and Micro/Nano-Optics
卷号10460
会议日期2017-06-04
会议地点Beijing, China
出版者SPIE
产权排序2
摘要

Optical traps have been widely used in a large variety of applications ranging from biophysics to nano-sciences. More than one microscopic object can be captured in an optical trap. In the practical application, it is always necessary to distinguish and control the number of captured objects in the optical trap. In this paper, a novel method has been presented to distinguish the number of trapped microspheres by measuring the intensity of back signal. Clear descent of the back signal has been observed when a microsphere is captured in the center of optical trap. The relative coupling efficiency of back signal decreases as the number of captured microspheres increases both in experiment and theory. This method contributes to miniaturization and integration of applied systems due to getting rid of the imaging system, and is generally applicable to the area of nanoparticle trapping. © 2017 SPIE.

作者部门瞬态光学技术国家重点实验室
DOI10.1117/12.2284995
收录类别EI ; ISTP
ISBN号9781510614017
语种英语
ISSN号0277786X
引用统计
文献类型会议论文
条目标识符http://ir.opt.ac.cn/handle/181661/29873
专题瞬态光学技术国家重点实验室
通讯作者Xiao, Guangzong (xiaoguangzong@nudt.edu.cn)
作者单位1.College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha, 410073, China
2.State Key Laboratory of Transient Optics and Photonic, Chinese Academy of Sciences, Xian, 710068, China
推荐引用方式
GB/T 7714
Zhou, Deyuan,Chen, Xinlin,Xiao, Guangzong,et al. Distinguishing the number of captured microspheres in dual-beam optical trap by measuring the back light signal[C]:SPIE,2017.
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