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Proceedings Paper

Optical trapping and micromanipulation using microbeam shaping created by micro-optical elements
Author(s): X.-C. Yuan; W.M. Lee; W.C. Cheong; S.H. Tao; B.S. Ahluwalia; K.J. Moh; M. He; H.B. Niu; X. Peng
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Paper Abstract

Optical trapping and manipulation are based on three types of the force and momentum, in the range of pN, to grab, lift and rotate microparticles due to the light intensity or phase distribution. In the first type, particles are trapped in the highest intensity region of the beam due to optical gradient force for high refractive index particles with respective to its surrounding medium. Secondly, orbital angular momentum (OAM) of a beam can be transferred to a particle due to phase singularity within a beam. Thirdly, spin angular momentum (SAM) can be transferred to the particles due to the circular polarization of the beam. In recent years, microfabricated optical elements have been used to modulate the amplitude and phase of the optical beam to create new generation of optical tweezers with additional manipulation dimensions. In this paper, a review of our recent discoveries of optical trapping and manipulation using micro-beam shaping and micro-optical elements will be presented.

Paper Details

Date Published: 7 February 2005
PDF: 7 pages
Proc. SPIE 5636, Holography, Diffractive Optics, and Applications II, (7 February 2005); doi: 10.1117/12.571969
Show Author Affiliations
X.-C. Yuan, Nanyang Technological Univ. (Singapore)
W.M. Lee, Nanyang Technological Univ. (Singapore)
W.C. Cheong, Nanyang Technological Univ. (Singapore)
S.H. Tao, Nanyang Technological Univ. (Singapore)
B.S. Ahluwalia, Nanyang Technological Univ. (Singapore)
K.J. Moh, Nanyang Technological Univ. (Singapore)
M. He, Nanyang Technological Univ. (Singapore)
H.B. Niu, Shenzhen Univ. (China)
X. Peng, Shenzhen Univ. (China)

Published in SPIE Proceedings Vol. 5636:
Holography, Diffractive Optics, and Applications II
Yunlong Sheng; Dahsiung Hsu; Chongxiu Yu; Byoungho Lee, Editor(s)

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