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arXiv · 1601.05619

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

Lei Wei·H. Paul Urbach
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Abstract

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.

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Lei Wei, H. Paul Urbach. 2016-01-21. Shaping the focal field of radially/azimuthally polarized phase vortex with Zernike polynomials. https://doi.org/10.1088/2040-8978%2F18%2F6%2F065608

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