A permanent optical storage medium exhibiting ultrahigh contrast, superior stability, and a broad working wavelength regime
Resource
Physical Chemistry Chemical Physics, 13(13), 5747-5752
Journal
Physical Chemistry Chemical Physics
Pages
5747
Date Issued
2011
Date
2011
Author(s)
Abstract
In this paper we demonstrate an optical storage medium having advantages of ultrahigh contrast, superior stability, and broadband working wavelengths. Combining a single shot of deep-ultraviolet (UV) laser illumination with a Au particle-assisted etching process, we formed broadband antireflective, one-dimensional silicon nanowire arrays (SiNWs) with selectively at specific positions. Optical measurements and three-dimensional finite-difference time domain (3D-FDTD) simulations revealed ultrahigh reflection contrast between the Au and the SiNWs for both far- and near-field regimes. Relative to typical organic-based storage media, Au films and SiNWs are more stable, both chemically and thermally; therefore, we suspect that this new storage medium would exhibit high stability toward moisture, sunshine, and elevated temperatures.
Type
journal article
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