NDLI: Analysis of Magneto-Optic Readout with Circular Polarized Light

Content Provider	IEEE Xplore Digital Library
Author	Lehureau, J.C. Beguin, J.Y.
Copyright Year	1985
Abstract	This paper presents a new design for magneto-optical pickups which detect the phase shift of circularly polarized light instead of the rotation of plane-polarized light. The use of a polarizing beam splitter and a quarter-wave plate enables a theoretical efficiency of 100%. Efficiency is important not only in order to reduce the laser power when recording, but also to avoid reflected light which would interfere with the laser output. We discuss the theory of readout from circularly polarized light and describe an experiment on reading from a rare earth-iron garnet magneto-optical disk. In conclusion, we discuss the advantages and drawbacks of such a reading method.
Starting Page	258
Ending Page	262
Page Count	5
File Size	860619
File Format	PDF
ISSN	08824959
Volume Number	4
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1989-04-01
Publisher Place	Hiroshima, Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic analysis Optical polarization Magnetooptic effects Laser theory Power lasers Magnetooptic recording Magnetooptic devices Phase detection Garnets Laser transitions
Content Type	Text
Resource Type	Article

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Analysis of Magneto-Optic Readout with Circular Polarized Light