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Optical Engineering

Novel approach to super-resolution pits readout
Author(s): Jingsong Wei; Fuxi Gan
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Paper Abstract

We proposed a novel method to realize the readout of super-resolution pits by using a super-resolution reflective film to replace the reflective layer of the conventional ROM. At the same time, by using Sb as the super-resolution reflective layer and SiN as a dielectric layer, the superresolution pits with diameters of 380 nm were read out by a setup whose laser wavelength is 632.8 nm and numerical aperture is 0.40. In addition, the influence of the Sb thin film thickness on the readout signal was investigated, the results showed that the optimum Sb thin film thickness is 28 to 30 nm, and the maximum CNR is 38 to 40 dB.

Paper Details

Date Published: 1 September 2002
PDF: 2 pages
Opt. Eng. 41(9) doi: 10.1117/1.1496790
Published in: Optical Engineering Volume 41, Issue 9
Show Author Affiliations
Jingsong Wei, Shanghai Institute of Optics and Fine Mechanics (China)
Fuxi Gan, Shanghai Institute of Optics and Fine Mechanics (China)


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