Jpn. J. Appl. Phys. 32 (1993) pp. 5402-5405  |Next Article|  |Table of Contents|
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Performance of a 600 Mbyte 90 mm Phase-Change Optical Disk against Disk Tilt

Toshihiro Sugaya, Toyoki Taguchi, Kei Shimura, Kouzoh Taira, Yoshinori Honguh, Hiroharu Satoh, Tadashi Kobayashi¹ and Naomasa Nakamura¹

(Received June 23, 1993; accepted for publication August 21, 1993)

The performance of a 0.6-mm-thick substrate disk was studied for tilted disk conditions. It was shown by numerical calculation that the reduction in the peak intensity of the optical spot was 0.5 dB under a disk tilt of 7 mrad when the numerical aperture (NA) of an objective lens was 0.6. The tilt angle dependence of the reading/writing performance was measured for a double-sided disk with a wavelength of 690 nm. Excellent signal quality was obtained, such as carrier-to-noise ratio of over 50 dB, erasability of more than 27 dB, crosstalk of under -27 dB, and jitter of under 30% of the window width for a tilt angle of 7 mrad.

URL: http://jjap.jsap.jp/link?JJAP/32/5402/
DOI: 10.1143/JJAP.32.5402

References | Citing Articles (9)

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2. H. H. Hopkins: J. Opt. Soc. Am. 69 (1979) 4.
3. J. Braat: Principles of Optical Disc Systems, ed. E. R. Pike (Adam Hilger, Bristol and Boston, 1985) Chap. 2, p. 44.
4. H. Satoh, Y. Kinoshita, K. Okao, M. Tanaka, H. Hagatani and Y. Honguh: Proc. SPIE 1499 (1991) 324[AIP Scitation].