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Multiple optical trapping based on high-order axially symmetric polarized beams |
Zhou Zhe-Hai, Zhu Lian-Qing |
Beijing Key Laboratory for Optoelectronic Measurement Technology, Beijing Information Science and Technology University, Beijing 100192, China |
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Abstract Multiple optical trapping with high-order axially symmetric polarized beams (ASPBs) is studied theoretically, and a scheme based on far-field optical trapping with ASPBs is first proposed. The focused fields and the corresponding gradient forces on Rayleigh dielectric particles are calculated for the scheme. The calculated results indicate that multiple ultra-small focused spots can be achieved, and multiple nanometer-sized particles with refractive index higher than the ambient can be trapped simultaneously near these focused spots, which are expected to enhance the capabilities of traditional optical trapping systems and provide a solution for massive multiple optical trapping of nanometer-sized particles.
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Received: 04 June 2014
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PACS: |
87.80.Cc
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(Optical trapping)
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42.25.Ja
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(Polarization)
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78.35.+c
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(Brillouin and Rayleigh scattering; other light scattering)
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Fund:Project supported by the National Natural Science Foundation of China (Grant Nos. 61108047 and 61475021), the Program for New Century Excellent Talents in University, China (Grant No. NCET-13-0667), and the Beijing Top Young Talents Support Program, China (Grant No. CIT&TCD201404113). |
Corresponding Authors: Zhou Zhe-Hai
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E-mail: zhouzhehai@bistu.edu.cn
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