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Optical Engineering

Near ultraviolet-visible radial wire grid polarizer for tight focusing applications
Author(s): Katsiaryna Ushakova; Alberto da Costa Assafrao; Silvania F. Pereira; H. Paul Urbach
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Paper Abstract

A circular wire grid polarizer (WGP) as a device to produce high quality radially polarized light at near UV wavelength range (in particular at the wavelength of λ=405  nm) is presented starting from design modeling followed by fabrication and performance analysis. The wire grid consists of concentric subwavelength metallic cylinders covering a high quality glass substrate and fabricated using an electron beam pattern generator and etching techniques. The theoretical modeling using the rigorous finite-element method and measurements of the transmitted light through the mask have been evaluated. An analysis on adjustments of the geometry of the WGP to produce the optimum focused spot of the longitudinal component of the electric field, its implementation, and qualitative testing are also presented.

Paper Details

Date Published: 6 October 2015
PDF: 8 pages
Opt. Eng. 54(10) 104101 doi: 10.1117/1.OE.54.10.104101
Published in: Optical Engineering Volume 54, Issue 10
Show Author Affiliations
Katsiaryna Ushakova, Technische Univ. Delft (The Netherlands)
Alberto da Costa Assafrao, Technische Univ. Delft (The Netherlands)
Silvania F. Pereira, Technische Univ. Delft (The Netherlands)
H. Paul Urbach, Technische Univ. Delft (The Netherlands)

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