Share Email Print

Proceedings Paper

Low-reflective wire-grid polarizers with absorptive interference overlayers
Author(s): Motofumi Suzuki; Akio Takada; Takatoshi Yamada; Takashi Hayasaka; Kouji Sasaki; Eiji Takahashi; Seiji Kumagai
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

We theoretically propose two types of antireflection (AR) coatings for metals. One type consists of a single layer of a dielectric material having a high refractive index. The other type consists of bilayers of absorptive and dielectric materials that are used in order to reduce the reflectance of high reflectivity metals such as Al in the visible region. The bilayered AR concept has been applied to reduce the reflectance of wire grid (WG) polarizers made of Al. An FeSi2 layer, which serves as an absorptive layer, has been deposited by the glancing angle deposition technique immediately on the top of Al wires covered with a thin SiO2 layer, which serves as a gap layer. For the optimum combination of the thicknesses of FeSi2 and SiO2, the reflectance reduces to lower than a few percent independent of the polarization, whereas the transmission polarization properties remain favorable. Because low reflectivity WG polarizers are completely composed of inorganic materials, they are useful for applications requiring thermal durability, such as liquid crystal projection displays.

Paper Details

Date Published: 23 August 2010
PDF: 9 pages
Proc. SPIE 7766, Nanostructured Thin Films III, 776609 (23 August 2010); doi: 10.1117/12.858454
Show Author Affiliations
Motofumi Suzuki, Kyoto Univ. (Japan)
Akio Takada, Sony Chemical & Information Device Corp. (Japan)
Takatoshi Yamada, Sony Chemical & Information Device Corp. (Japan)
Takashi Hayasaka, Sony Chemical & Information Device Corp. (Japan)
Kouji Sasaki, Sony Chemical & Information Device Corp. (Japan)
Eiji Takahashi, Sony Chemical & Information Device Corp. (Japan)
Seiji Kumagai, Sony Chemical & Information Device Corp. (Japan)

Published in SPIE Proceedings Vol. 7766:
Nanostructured Thin Films III
Raúl J. Martin-Palma; Yi-Jun Jen; Akhlesh Lakhtakia, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?