Performances of pregrooved phase-change rewritable media in the 680-nm laser diode system

Takeo Ohta; Kazumi Yoshioka; Tetsuya Akiyama; Stephen F. Heil; Yuji Takagi; Tomio Yoshida

doi:10.1117/12.190175

12 October 1994 Performances of pregrooved phase-change rewritable media in the 680-nm laser diode system

Takeo Ohta, Kazumi Yoshioka, Tetsuya Akiyama, Stephen F. Heil, Yuji Takagi, Tomio Yoshida

Proceedings Volume 2338, 1994 Topical Meeting on Optical Data Storage; (1994) https://doi.org/10.1117/12.190175
Event: Optical Data Storage '94, 1994, Dana Point, CA, United States

Abstract

The performances of the pregrooved Phase Change Rewritable (PCR) media have been measured by using an test drive which optical head have a 680 nm laser diode and focus lens with numerical aperture of 0.55. The write/read characteristics and groove parameters have been measured. The linear density of 1.42 Kbits/mm by using Pulse Position (PPM) recording method and track pitch of less than 1 micrometers are expected to be realized.

Citation Download Citation

Takeo Ohta, Kazumi Yoshioka, Tetsuya Akiyama, Stephen F. Heil, Yuji Takagi, and Tomio Yoshida "Performances of pregrooved phase-change rewritable media in the 680-nm laser diode system", Proc. SPIE 2338, 1994 Topical Meeting on Optical Data Storage, (12 October 1994); https://doi.org/10.1117/12.190175

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