Broadband iridium wire grid polarizer for UV applications |
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Authors: | Weber Thomas Käsebier Thomas Kley Ernst-Bernhard Tünnermann Andreas |
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Institution: | Institut für Angewandte Physik, Friedrich-Schiller-Universit?t Jena, Jena, Germany. th.weber@uni?jena.de |
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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 100 nm for an application below a wavelength of 300 nm was realized using a spatial frequency doubling technique based on ultrafast electron beam writing. The optical performance of the polarizer at a wavelength of 300 nm is a transmittance of almost 60% and an extinction ratio of about 30 (15 dB). Furthermore, the oxidation resistance is discussed. |
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