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Broadband iridium wire grid polarizer for UV applications

 
: Weber, T.; Käsebier, T.; Kley, E.-B.; Tünnermann, A.

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Optics Letters 36 (2011), No.4, pp.445-447
ISSN: 0146-9592
English
Journal Article
Fraunhofer IOF ()

Abstract
In this Letter, we present an iridium wire grid polarizer with a large spectral working range from IR down to the UV spectral region. The required grating period of 100nm for an application below a wavelength of 300nm was realized using a spatial frequency doubling technique based on ultrafast electron beam writing. The optical performance of the polarizer at a wavelength of 300nm is a transmittance of almost 60% and an extinction ratio of about 30 (15dB). Furthermore, the oxidation resistance is discussed.

: http://publica.fraunhofer.de/documents/N-153970.html