Optical properties and microstructures of inorganic wave plates prepared by serial bideposition

Nobuyuki Koike; Koji Sasaki; Takatoshi Yamada; Naoki Hanashima; Akio Takada; Motofumi Suzuki

doi:10.1117/1.JNP.8.083991

10 April 2014 Optical properties and microstructures of inorganic wave plates prepared by serial bideposition

Nobuyuki Koike, Koji Sasaki, Takatoshi Yamada, Naoki Hanashima, Akio Takada, Motofumi Suzuki

Author Affiliations +

Journal of Nanophotonics, Vol. 8, Issue 1, 083991 (April 2014). https://doi.org/10.1117/1.JNP.8.083991

Abstract

We investigated the optical characteristics and microstructures of wave plates composed of Ta₂O₅(100−x)+TiO₂(x) and prepared by the so-called serial bideposition technique. While a single-layer film prepared by conventional oblique deposition technique has a tilted columnar structure (i.e., tilted optical axis), a serial bideposition film has a narrow, long columnar structure; this ensures that the optical axis of the film is along the quasinormal to the substrate, thus reducing haze. The influence of using additives with Ta₂O₅ was investigated as well. It was found that additive TiO₂ improves optical transmittance at shorter wavelengths. For verifying the advantage of this type of wave plates, quarter wave plates with optimized TiO₂ content were fabricated and their optical performance and reliability were evaluated against those of organic-type wave plates. The results show that the inorganic wave plate prepared by serial bideposition is advantageous for applications where high-transmittance and high-temperature durability are essential.

CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Nobuyuki Koike, Koji Sasaki, Takatoshi Yamada, Naoki Hanashima, Akio Takada, and Motofumi Suzuki "Optical properties and microstructures of inorganic wave plates prepared by serial bideposition," Journal of Nanophotonics 8(1), 083991 (10 April 2014). https://doi.org/10.1117/1.JNP.8.083991

Published: 10 April 2014

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KEYWORDS

Wave plates

Transmittance

Tantalum

Optical properties

Resistance

Air contamination

Birefringence

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