Experimental effects of laser power on the writability and PW/sub 50/ in a heat assisted longitudinal recording system

International Symposium on Optical Memory and Optical Data Storage Topical Meeting - Trang 162-164
T. Rausch1, J.A. Bain1, D.D. Stancil1, T.E. Schlesinger1, W.A. Challener2, T. McDaniel2, N. Deeman2, C. Brucker2
1Data Storage Systems Center, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
2Seagate Technology, Scotts Valley, California, USA

Tóm tắt

In a heat assisted magnetic recording (HAMR) system, light from a laser diode is used to heat the medium which assists in the recording process by temporarily reducing the coercivity during writing. The recorded marks are read back using a magnetoresistive (MR) sensor that senses the stray flux from a magnetic transition. In this paper we examine the effects of the laser power on the writability and the pulse width at half maximum (PW/sub 50/) for granular longitudinal media.

Từ khóa

#Power lasers #Heat-assisted magnetic recording #Magnetic recording #Diode lasers #Coercive force #Writing #Magnetoresistance #Magnetic sensors #Magnetic flux #Laser transitions

Tài liệu tham khảo

rausch, 2001, Experimental Test Bed for Hybrid Recording, Proc SPIE, 4342, 502, 10.1117/12.453398 neal bertram, 0, 213 10.1109/20.950808 10.1109/20.750617 10.1103/PhysRev.130.1677 10.1017/CBO9780511623066
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International Symposium on Optical Memory and Optical Data Storage Topical Meeting

162-164

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