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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editor: Gregory W. Faris
  • Vol. 2, Iss. 7 — Jul. 16, 2007

Effect of spatial coherence on radiation forces acting on a Rayleigh dielectric sphere

Li-Gang Wang, Cheng-Liang Zhao, Li-Qin Wang, Xuan-Hui Lu, and Shi-Yao Zhu  »View Author Affiliations

Optics Letters, Vol. 32, Issue 11, pp. 1393-1395 (2007)

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We show that the radiation forces (RFs) on a Rayleigh dielectric sphere induced by a partially coherent light beam are greatly affected by the spatial coherence. We find that the magnitude of the RFs greatly decreases as the spatial coherence decreases and derive an inequality for the required correlation width σ 0 (i.e., the spatial coherence of the beam) to stably trap the particles.

© 2007 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(140.7010) Lasers and laser optics : Laser trapping
(290.5850) Scattering : Scattering, particles

ToC Category:
Lasers and Laser Optics

Original Manuscript: January 5, 2007
Revised Manuscript: February 24, 2007
Manuscript Accepted: March 4, 2007
Published: April 25, 2007

Virtual Issues
Vol. 2, Iss. 7 Virtual Journal for Biomedical Optics

Li-Gang Wang, Cheng-Liang Zhao, Li-Qin Wang, Xuan-Hui Lu, and Shi-Yao Zhu, "Effect of spatial coherence on radiation forces acting on a Rayleigh dielectric sphere," Opt. Lett. 32, 1393-1395 (2007)

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