NDLI: Theoretical and experimental studies on optical trapping using radially polarized beams

Content Provider	Springer Nature Link
Author	Zhou, Zhehai Zhang, Yuling Zhu, Lianqing
Copyright Year	2016
Abstract	Optical trapping using radially polarized beams is studied theoretically and experimentally. First the geometric ray model is introduced to calculate the trapping efficiencies, and simulation results using three kinds of pupil apodization functions are presented to disclose the influences of pupil apodization functions of incident beams on trapping efficiencies, which indicates the better trapping performances can be achieved by modulating the polarization and amplitude distributions of incident beams using designated pupil filters. Furthermore, the optical tweezers using radially polarized beams are built up based on an inverted microscope and a spatial light modulator (SLM), where better trapping efficiencies can be achieved. Yeast cells about 10μm in diameter are trapped and manipulated using the optical tweezers and the cells can be trapped stably and shifted along the tracks of the focusing spot, which can be programmed by a computer. In addition, the values of trap stiffness for different pupil apodization functions are measured at different laser powers based on the Boltzmann statistics method, which indicates the AL-types pupil apodization function is a better choice for general trapping and manipulation of cells.
Starting Page	1
Ending Page	10
Page Count	10
File Format	PDF
ISSN	03068919
Journal	Optical and Quantum Electronics
Volume Number	48
Issue Number	8
e-ISSN	1572817X
Language	English
Publisher	Springer US
Publisher Date	2016-07-29
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical trapping Radially polarized beam Geometric ray model Trapping efficiency Pupil apodization function Optics, Lasers, Photonics, Optical Devices Electrical Engineering Characterization and Evaluation of Materials Computer Communication Networks
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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