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Optical Engineering

Reversal construction of polarization-controlled focusing field with multiple focal spots
Author(s): Jiming Wang; Qingliang Liu; Chongjun He; Youwen Liu
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Paper Abstract

We propose an approach to control the polarization and intensity of the focusing field with multiple focal spots in a high-numerical-aperture imaging system. This focused field is explained as the reversal radiation of the dipole array with presupposed oscillating direction in the focal volume. By engineering the structure of the electric dipole array and reversing the radiation from this dipole array, the local manipulation of intensity and polarization in the focal region is achieved, and the required field at the pupil plane is derived. A focusing field with six vectorial focal spots is created as an example to verify this method. This multifocal field will meet potential application in polarization-dependent optical microscope and optical trapping for multiple particles.

Paper Details

Date Published: 24 April 2013
PDF: 5 pages
Opt. Eng. 52(4) 048002 doi: 10.1117/1.OE.52.4.048002
Published in: Optical Engineering Volume 52, Issue 4
Show Author Affiliations
Jiming Wang, Nanjing Univ. of Aeronautics and Astronautics (China)
Qingliang Liu, Nanjing Univ. of Aeronautics and Astronautics (China)
Chongjun He, Nanjing Univ. of Aeronautics and Astronautics (China)
Youwen Liu, Nanjing Univ. of Aeronautics and Astronautics (China)


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