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Proceedings Paper

Laser Diodes for DRAW Optical Disk System
Author(s): K. Yamashita; S. Nagai; K. Tamari; M. Kubota; S. Takamiya
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Paper Abstract

Laser diode for DRAW optical disk systems has to have not only high power characteristics (writing) but also low noise characteristics (reading) at low power. However, few of so-called "high power lasers" have low noise. In this paper, we present a new high power low noise laser, which can be volume produced at low cost. The laser have wavelength of 780nm, power output of 25mW (50% duty cycle), and high S/N ratio of 90dB (f=20kHz, BW=300Hz, opt-ical feedback ratio < 1%) at 3mW CW. In addition, it has a lifetime enough to write an optical disk for 50,000 hours.

Paper Details

Date Published: 16 July 1986
PDF: 6 pages
Proc. SPIE 0610, Scientific and Engineering Applications of Commercial Laser Devices, (16 July 1986); doi: 10.1117/12.956402
Show Author Affiliations
K. Yamashita, Mitsubishi Electric Corporation (Japan)
S. Nagai, Mitsubishi Electric Corporation (Japan)
K. Tamari, Mitsubishi Electric Corporation (Japan)
M. Kubota, Mitsubishi Electric Corporation (Japan)
S. Takamiya, Mitsubishi Electric Corporation (Japan)


Published in SPIE Proceedings Vol. 0610:
Scientific and Engineering Applications of Commercial Laser Devices
Rick Feinberg; Lewis Holmes; Morris Levitt, Editor(s)

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