Jpn. J. Appl. Phys. 41 (2002) pp. 1905-1906 |Next Article| |Table of Contents|
|Full Text PDF (91K)| |Buy This Article|
Short Note
Practical Properties of Thermochromically Induced Super-Resolution Read-Only Memory Disk (TSR-ROM)
Masaru Hatakeyama1,,
Akihiko Nomura1,
Kenji Oishi1,
Koji Tsujita1,
Yoshiaki Suzuki1 and
Ichiro Ueno2
1Technology Development Division, Victor Company of Japan, Limited, 58-7 Shinmei-cho, Yokosuka, Kanagawa 239-8550, Japan
2Victor Techno-brain Company, Limited, 58-7 Shinmei-cho, Yokosuka, Kanagawa 239-8550, Japan
(Received October 29, 2001; accepted for publication November 21, 2001)
Super-resolution effects and practical properties of a thermochromic mask layer for a read-only memory disk are evaluated using a conventional disk tester with a 635 nm light source and a 0.6 numerical aperture (NA) pickup. A carrier-to-noise ratio (C/N) of over 40 dB is obtained at a pit length of 0.20 µm which is far smaller than the resolution limit. Sufficient tilt margins and power margin are obtained at the capacity of 11 GB.
KEYWORDS:
thermochromic, super-resolution, TSR, read-only memory disk, margin
URL:
http://jjap.ipap.jp/link?JJAP/41/1905/
DOI: 10.1143/JJAP.41.1905
- T. Kikukawa, T. Kato, H. Shingai and H. Utsunomiya:
Jpn. J. Appl. Phys. 40 (2001) 1624[IPAP].
- T. Shintani, M. Terao, H. Yamamoto and T. Naito:
Jpn. J. Appl. Phys. 38 (1999) 1656[IPAP].
- T. Nagase, S. Ashida and K. Ichihara:
Jpn. J. Appl. Phys. 38 (1999) 1665[IPAP].
- M. Kuroda: Tech. Dig. Int. Symp. Optical Memory (1995) We-C1.
- M. Hatakeyama, T. Ando, K. Tsujita, K. Oishi and I. Ueno:
Jpn. J. Appl. Phys. 39 (2000) 752[IPAP].
- M. Hatakeyama, A. Nomura, K. Oishi, Y. Suzuki and I. Ueno:
Jpn. J. Appl. Phys. 40 (2001) 1645[IPAP].
