NDLI: Design of optical flying head for magnetooptical recording

Content Provider	IEEE Xplore Digital Library
Author	Sang-Joon Yoon Jongsoo Lee Young-Pil Park Dong-Hoon Choi
Copyright Year	1965
Abstract	Since the optical flying head (OFH) for magnetooptical recording systems requires stricter static and dynamic characteristics of slider air bearings within an optical tilt tolerance over the entire recording band than conventional magnetic head sliders in hard disk drives, a new design to keep the focusing and tracking ability stable is essential. This paper proposes a design methodology to automatically determine the optimum configurations of the OFH satisfying the desired design requirements by using the proposed design framework. The desired flying characteristics considered in this paper are to minimize the variation in flying height between the solid immersion lens (SIL) and the disk from a target value, satisfying the restriction of the minimum flying height to keep the pitch and roll angles within an optical tilt tolerance and to ensure a higher air-bearing stiffness. Simulation results demonstrate the effectiveness of the proposed design methodology by showing that the static and dynamic flying characteristics of the optimally designed OFH are enhanced in comparison with those of the original. The gap between the SIL and the MO disk can be kept at less than 100 nm, even if the optical tilt tolerance of the SIL is considered.
Sponsorship	IEEE Magnetics Society
Starting Page	2851
Ending Page	2853
Page Count	3
File Size	233075
File Format	PDF
ISSN	00189464
Volume Number	41
Issue Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical recording Optical design Magnetic heads Magnetooptic recording Disk recording Magnetooptic effects Design methodology Hard disks Solids Lenses optimum design Optical flying head (OFH)
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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