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Wednesday, October 31, 2012

Optical forces on Mie particles in an Airy evanescent field

Yang Yang, Wei-Ping Zang, Zhi-Yu Zhao, and Jian-Guo Tian
Using vector potential and spectrum representation, we derive the expressions of the Airy evanescent field existed at the interface. Utilizing these expressions and the Arbitrary Beam Theory, the optical forces exerted on a Mie dielectric particle in the Airy evanescent field were theoretically investigated in detail. Numerical results show that the optical forces exhibit strong oscillations which are corresponding to the distributions of the evanescent field. With the increasing the size of particle radius, Morphology Dependent Resonance occurs for the particle with specific refractive index.
DOI
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