High Density Magneto-Optical Recording with a Second-Harmonic Generation Green Laser

Autor:	Yuichi Sabi, Hideo Owa, Masahiko Kaneko, Atsushi Fukumoto, Isao Ichimura, Yasuyuki Takeshita
Rok vydání:	1993
Předmět:	business.industry Chemistry General Engineering General Physics and Astronomy Second-harmonic generation Photodetector Laser law.invention Wavelength Optics law Optical recording Bit error rate Area density business Optical disc
Zdroj:	Japanese Journal of Applied Physics. 32:5312
ISSN:	1347-4065 0021-4922
DOI:	10.1143/jjap.32.5312
Popis:	Tripled areal density optical recording was realized with the combination of a high power laser-diode pumped intracavity frequency-doubled Nd:YAG laser (SHG green laser), a low noise GdFeCo/TbFeCo double-layered magneto-optical (MO) disk, and high sensitivity photodetectors optimized for the wavelength of the light source. A high carrier-to-noise (C/N) ratio of more than 48 dB and a bit error rate of less than 3×10-6 by (2, 7) run-length-limited (RLL) mark position recording was obtained at a mark length of 0.45 µm (0.6 µm/bit) for a disk with a 0.9 µm track pitch.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b7167cb53b958e9dcc752a1ee2ab86a3 https://doi.org/10.1143/jjap.32.5312 Zobrazit plný text záznamu