Optical properties of porous helical thin films

Applied Optics
Andy C van PoptaMichael J Brett

Abstract

Porous dielectric thin films, composed of isolated helical columns, are fabricated by the glancing angle deposition technique. The selective reflection of circularly polarized light and the optical rotation of linearly polarized light are investigated as a function of film material and helical morphology. The strongest chiral optical response is observed for titanium-dioxide films because of its large refractive index. Optical rotatory powers as high as 4.5 degrees are observed in 830-nm-thick helical films. By tailoring the pitch of the helical columns, the wavelength dependence of the circular reflection band is tuned to preferentially reflect red, green, or blue light, a promising quality for display applications.

Citations

Feb 3, 2016·Angewandte Chemie·Yuanyuan CaoShunai Che
Jul 3, 2015·Langmuir : the ACS Journal of Surfaces and Colloids·Sunhee LeeDong Ki Yoon
Jun 22, 2010·Journal of the American Chemical Society·Hirokatsu MiyataPhilip J Martin
Nov 22, 2012·Nature Communications·Shaohua LiuShunai Che
Jun 6, 2020·Advanced Materials·Jinchen Fan, Nicholas A Kotov
Jun 25, 2009·Optics Express·Yong Jun ParkChang Kwon Hwangbo
Nov 7, 2013·Chemical Communications : Chem Comm·Liguo MaShunai Che
Sep 27, 2019·Nano Letters·Sumant SarkarJohn G Gibbs
Nov 18, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Shizhao Liu, Joel L Plawsky

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