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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 27, Iss. 4 — Feb. 15, 1988
  • pp: 698–702

New magnetooptic head with a built-in generator for a bias magnetic field

Hiromichi Kobori, Teruo Murakami, and Masafumi Mori  »View Author Affiliations


Applied Optics, Vol. 27, Issue 4, pp. 698-702 (1988)
http://dx.doi.org/10.1364/AO.27.000698


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Abstract

A high performance magnetooptic head, which generates a bias magnetic field itself, has been developed. It has a moving magnet actuator to drive an objective lens. The moving magnets have two functions. One is to apply a constant magnetic field on the recording medium. The other is to comprise a magnetic circuit for focusing and tracking control. This magnetooptic head is suitable for use in the two-head erase and write method, in which it is not necessary to change the polarity of the bias magnetic field. Moreover, it enables designing a small-sized magnetooptic disk drive, because a bias magnetic field generator is built into the optical head.

© 1988 Optical Society of America

History
Original Manuscript: April 25, 1987
Published: February 15, 1988

Citation
Hiromichi Kobori, Teruo Murakami, and Masafumi Mori, "New magnetooptic head with a built-in generator for a bias magnetic field," Appl. Opt. 27, 698-702 (1988)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-27-4-698

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