Journal
OPTICS LETTERS
Volume 36, Issue 12, Pages 2251-2253Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.36.002251
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Funding
- National Natural Science Foundation of China (NSFC) [61008009, 10904102]
- Universities Natural Science Research Project of Jiangsu Province [10KJB140011]
- Foundation for the Author of National Excellent Doctoral Dissertation of PR China [200928]
- Natural Science Foundation of Jiangsu Province [BK2009114]
- Huo Ying Dong Education Foundation of China [121009]
- Chinese Ministry of Education [210081]
- Jiangsu Higher Education Institutions
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The radiation forces on a Rayleigh dielectric sphere induced by a focused partially coherent elegant Laguerre-Gaussian (ELG) beam are investigated by using the Rayleigh scattering theory. It is found that a focused partially coherent ELG beam with suitable mode orders can be used to trap a Rayleigh particle whose refractive index is larger or smaller than that of the ambient by varying its initial spatial coherence width. Therefore, one can use one optical-trap system to trap two types of particles with different refractive indices. (c) 2011 Optical Society of America
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