Use of Ta2O5 biaxial thin film as a high-efficiency polarization converter

Chia-Feng Lin; Yi-Jun Jen

doi:10.1117/1.JNP.6.061507

31 May 2012 Use of Ta₂O₅ biaxial thin film as a high-efficiency polarization converter

Chia-Feng Lin, Yi-Jun Jen

Author Affiliations +

Journal of Nanophotonics, Vol. 6, Issue 1, 061507 (May 2012). https://doi.org/10.1117/1.JNP.6.061507

Abstract

A columnar Ta₂O₅ thin film was fabricated with oblique angle deposition and applied in a prism coupling system as a polarization converter. The transmission, reflection and propagation for the wave reflected in one-round trip from the biaxial film were analyzed. Constructive interference occurred for polarization coupling to achieve polarization conversion. Birefringence of the biaxial thin film provided a sophisticated phase compensation as the incident angle varied over a large range to have a wide-angle polarization conversion. For broadband illumination applications, high polarization conversion efficiency was achieved over visible wavelengths.

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Chia-Feng Lin and Yi-Jun Jen "Use of Ta₂O₅ biaxial thin film as a high-efficiency polarization converter," Journal of Nanophotonics 6(1), 061507 (31 May 2012). https://doi.org/10.1117/1.JNP.6.061507

Published: 31 May 2012

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