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Proceedings Paper

Trilayer Bubble-Forming Optical Recording Media
Author(s): G. A. N. Connell; R. I. Johnson; D. Kowalski; C. DePuy
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Paper Abstract

An investigation was made of the possibilities of optical recording on bubble-forming metal/thermodegradeable-plastic bilayers incorporated in front-surface trilayer devices. Two distinct types of trilayer device were chosen for study. It was found that a device consisting of a 14 nm-thick metal layer, a 200 nm-thick thermodegradeable-plastic dielectric layer and a 100 nm-thick aluminum layer had promising properties. That is, a power of only 6.5 mW focussed into a 0.8 μm spot at 442 nm (the helium-cadmium laser line) was required to write a 5 MHz-pattern with 50% duty cycle. This pattern is observed with high contrast at 633 nm (the helium-near laser line), where the initial reflectivity is 0.9, and it provides signal to noise in a 30 kHz bandwidth of 45 dB. The trilayer device is also calculated to have the same writing sensitivity at 830 nm (the gallium arsenide laser line).

Paper Details

Date Published: 27 May 1982
PDF: 8 pages
Proc. SPIE 0329, Optical Disk Technology, (27 May 1982); doi: 10.1117/12.933389
Show Author Affiliations
G. A. N. Connell, Xerox Palo Alto Research Center (United States)
R. I. Johnson, Xerox Palo Alto Research Center (United States)
D. Kowalski, Xerox Palo Alto Research Center (United States)
C. DePuy, Xerox Palo Alto Research Center (United States)

Published in SPIE Proceedings Vol. 0329:
Optical Disk Technology
Robert A. Sprague, Editor(s)

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