8 September 1995 Low-noise high-reliability 680-nm optical head enables robust 14.8-gigabyte/disk product
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Proceedings Volume 2514, Optical Data Storage '95; (1995); doi: 10.1117/12.218714
Event: Optical Data Storage '95, 1995, San Diego, CA, United States
Abstract
A high reliability and low noise 680 nm optical head is described. This head enables a high data integrity, 14.8 GByte/disk product (KODAK optical disk system 2000). The laser intensity noise is measured to be -133 to -137 dB/Hz at the data frequencies. This allows phase margin for the system to exceed 50%. The laser with drive electronics is shown to have a pulse lifetime of greater than 40,000 hours at exaggerated drive conditions.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Edward C. Gage, Scott Beckens, Patrick J. Cronkite, Steve Dohmeier, David B. Kay, Mike Meichle, Robert J. Metzger, "Low-noise high-reliability 680-nm optical head enables robust 14.8-gigabyte/disk product", Proc. SPIE 2514, Optical Data Storage '95, (8 September 1995); doi: 10.1117/12.218714; https://doi.org/10.1117/12.218714
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KEYWORDS
Head

Reliability

Semiconductor lasers

Beam splitters

Pulsed laser operation

Optical discs

Polarization

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