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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 35 — Dec. 10, 1998
  • pp: 8187–8194

Pulse–read on erasable thermal phase-change superresolution disks

Jia-Reuy Liu, Pei-Yih Liu, Nai-Yuan Tang, and Han-Ping D. Shieh  »View Author Affiliations


Applied Optics, Vol. 37, Issue 35, pp. 8187-8194 (1998)
http://dx.doi.org/10.1364/AO.37.008187


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Abstract

New erasable thermal phase-change superresolution (EPSR) disks composed of mask and recording layers can increase recording density by the detection of the below-diffraction-limited marks within the readout spot. The formation of the aperture and the readout signal on the EPSR disk were analyzed. The feasibility of optically designed EPSR disks was evaluated by thermal simulation. A carrier-to-noise ratio of 32 dB at a mark size of 0.4 μm, 8 dB higher than that of a conventional disk, was obtained by application of a pulse–read method to the EPSR disks at a wavelength of 780 nm and a numerical aperture of 0.55.

© 1998 Optical Society of America

OCIS Codes
(210.0210) Optical data storage : Optical data storage
(210.4590) Optical data storage : Optical disks
(210.4810) Optical data storage : Optical storage-recording materials

History
Original Manuscript: February 9, 1998
Revised Manuscript: August 26, 1998
Published: December 10, 1998

Citation
Jia-Reuy Liu, Pei-Yih Liu, Nai-Yuan Tang, and Han-Ping D. Shieh, "Pulse–read on erasable thermal phase-change superresolution disks," Appl. Opt. 37, 8187-8194 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-35-8187

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