25 September 1984 Self-Coupled Optical Pickup (∏) And Its Application
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Proceedings Volume 0490, Applications of Optical Digital Data Disk Storage Systems; (1984) https://doi.org/10.1117/12.943447
Event: Applications of Optical Digital Data Disk Storage Systems, 1984, Brussels, Belgium
Abstract
Our paper consist of two parts. First, we have demonstrated that the characteristics of a self-coupled optical pickup are remarkably improved by use of a newly-developed so-called incoherent laser diode made by Sharp, Servo signals for focusing are obtained by wobbling method with signal to noise ratio more than 30 dB. Second, we describe a simple real time method for sensitivity measurement of optical storage media utilizing a self-coupling effects of a GaAlAs laser diode. We have shown that we make clear the depend-ences of duration time in writing laser pulses and substrate materials on the sensitivity of a single tellurium film recording material.
© (1984) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yoshinobu Mitsuhashi, Yoshinobu Mitsuhashi, Junichi Shimada, Junichi Shimada, Shigeru Kogure, Shigeru Kogure, Yorihiko Sakai, Yorihiko Sakai, } "Self-Coupled Optical Pickup (∏) And Its Application", Proc. SPIE 0490, Applications of Optical Digital Data Disk Storage Systems, (25 September 1984); doi: 10.1117/12.943447; https://doi.org/10.1117/12.943447
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