First-Surface Far Field Magneto-Optical Recording

Autor:	Ferry Zijp, Hans Willem Van Kesteren, Coen A. Verschuren, Bart Van Rompaey
Rok vydání:	2002
Předmět:	Physics Physics and Astronomy (miscellaneous) Physics::Instrumentation and Detectors business.industry Detector General Engineering General Physics and Astronomy Near and far field Power margin Signal Numerical aperture Optics Margin (machine learning) Rise time Laser power scaling business
Zdroj:	Japanese Journal of Applied Physics. 41:1880-1883
ISSN:	1347-4065 0021-4922
DOI:	10.1143/jjap.41.1880
Popis:	Magnetic AMplifying Magneto Optical System (MAMMOS) is a promising technology for high storage densities. However, the laser power margin for correct readout is quite small. Based on the understanding of the readout process, recording and readout methods have been developed and tested to improve this margin. First results show that the increased margin allows correct readout of bit lengths as short as 75 nm, which corresponds to an increase in storage density by a factor 1.5 compared to conventional MAMMOS. No changes to the light path or the disk are required. Finally, we measured the rise time of the MAMMOS signal using a fast detector. The result shows that for a numerical aperture (NA)=0.85 and λ=405 nm MAMMOS is capable of data rates around 100 Mb/s.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::57a9577b05e2485b949420607fe1cf1d https://doi.org/10.1143/jjap.41.1880 Zobrazit plný text záznamu