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Proceedings Paper

Textured Optical Storage Media
Author(s): H. G. Craighead; R. E. Howard; R. W. Smith; D. A. Snyder
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Paper Abstract

A class of optical storage media is described which consists of thin films, microscopically textured by reactive ion etching. These surfaces have random arrays of decoupled columns or cones with cross-sectional dimensions less than 100 nm. This structure yields a spatially varying, graded refractive index resulting in low specular reflectance for visible wavelengths. Reflective spots ~1 μm in diameter have been produced on the surfaces by local melting with a low power laser beam. This has been demonstrated for highly stable materials such as Si and Ge with threshold energies as low as ~1 nJ. The fabrication, microstructure, writing parameters and encapsulation of the media are discussed.

Paper Details

Date Published: 27 May 1982
PDF: 6 pages
Proc. SPIE 0329, Optical Disk Technology, (27 May 1982); doi: 10.1117/12.933395
Show Author Affiliations
H. G. Craighead, Bell Laboratories (United States)
R. E. Howard, Bell Laboratories (United States)
R. W. Smith, Bell Laboratories (United States)
D. A. Snyder, Bell Laboratories (United States)


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

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