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Shaping the focal field of radially/azimuthally polarized phase vortex with Zernike polynomials

The focal field properties of radially/azimuthally polarized Zernike polynomials are studied. A method to design the pupil field in order to shape the focal field of radially or azimuthally polarized phase vortex is introduced. With this method, we are able to obtain a pupil field to achieve a longitudinally polarized hollow spot with a depth of focus up to $12λ$ and $0.14λ$ lateral resolution for a optical system with numerical aperture 0.99; A pupil field to generate 8 circularly polarized focal spots along the optical axis is also obtained with this method.

preprint2016arXivOpen access
Lei WeiH. Paul Urbach
physics.optics
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Open access2 authors1 topic
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Lei WeiH. Paul Urbach

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