Laser Diodes for DRAW Optical Disk System

K. Yamashita; S. Nagai; K. Tamari; M. Kubota; S. Takamiya

doi:10.1117/12.956402

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16 July 1986 Laser Diodes for DRAW Optical Disk System

K. Yamashita, S. Nagai, K. Tamari, M. Kubota, S. Takamiya

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Proceedings Volume 0610, Scientific and Engineering Applications of Commercial Laser Devices; (1986) https://doi.org/10.1117/12.956402
Event: O-E/LASE'86 Symposium, 1986, Los Angeles, CA, United States

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.

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K. Yamashita, S. Nagai, K. Tamari, M. Kubota, and S. Takamiya "Laser Diodes for DRAW Optical Disk System", Proc. SPIE 0610, Scientific and Engineering Applications of Commercial Laser Devices, (16 July 1986); https://doi.org/10.1117/12.956402

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