Recording Performance of a Pulsed HAMR Architecture

Autor:	Todd Michael Lammers, Tim Rausch, Siva Puranam, Deepthi Nagulapally, John W. Dykes, Pu-Ling Lu, Edward Charles Gage, Alfredo Sam Chu
Rok vydání:	2015
Předmět:	Materials science business.industry Signal edge Laser Electronic Optical and Magnetic Materials Pulse (physics) law.invention Optics Heat-assisted magnetic recording law Bit error rate Continuous wave Area density Electrical and Electronic Engineering business Polarity (mutual inductance)
Zdroj:	IEEE Transactions on Magnetics. 51:1-5
ISSN:	1941-0069 0018-9464
DOI:	10.1109/tmag.2014.2355173
Popis:	In most heat-assisted magnetic recording (HAMR) systems, the laser is ON and kept constant during the entire sector. In this architecture, the transitions are defined whenever the magnetic writer changes polarity. In a pulsed HAMR system, the laser pulses once per bit. In this architecture, the transition is defined by the rising edge of the first laser pulse after a magnetic writer current transition. In this paper, we compare the bit error rate (BER) and areal density capability (ADC) of both continuous wave (CW) HAMR and pulsed HAMR. For our testing conditions, we find that there is no penalty for using a pulsed HAMR system over a CW HAMR system in terms of BER and ADC capability.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4c2be79f5634d762f722cb7ea9f7921a https://doi.org/10.1109/tmag.2014.2355173 Zobrazit plný text záznamu