Trapping and guiding microparticles with morphing autofocusing Airy beams |
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Authors: | Zhang Peng Prakash Jai Zhang Ze Mills Matthew S Efremidis Nikolaos K Christodoulides Demetrios N Chen Zhigang |
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Affiliation: | Department of Physics and Astronomy, San Francisco State University, San Francisco, California 94132, USA. |
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Abstract: | We observe optical trapping and manipulation of dielectric microparticles using autofocusing radially symmetric Airy beams. This is accomplished by exploiting either the inward or outward transverse acceleration associated with their chirped wavefronts. We experimentally demonstrate, for the first time to our knowledge, that such Airy beams morph into nondiffracting Bessel beams in their far-field. Furthermore, the ability of guiding and transporting microparticles along the primary rings of this class of beams is explored. |
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