31 May 2012 Use of Ta2O5 biaxial thin film as a high-efficiency polarization converter
Author Affiliations +
J. of Nanophotonics, 6(1), 061507 (2012). doi:10.1117/1.JNP.6.061507
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.
© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE)
Chia-Feng Lin, 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

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