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Applied Optics

Applied Optics


  • Vol. 29, Iss. 34 — Dec. 1, 1990
  • pp: 5131–5135

Reflection polarizing holographic optical element for compact magnetooptical disk heads

Akitomo Ohba, Yasuo Kimura, Seizin Sugama, Ryuichi Katayama, and Yuzo Ono  »View Author Affiliations

Applied Optics, Vol. 29, Issue 34, pp. 5131-5135 (1990)

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A reflection polarizing holographic optical element with sinusoidal surface-relief has been developed for compact magnetooptical (MO) disk heads. The element has the polarizing beam splitter function as well as the focusing and tracking error signal detection functions. To produce the sinusoidal surface-relief structure with photolithography, a new fabrication process, which includes procedures for converting a rectangular profile into a sinusoidal profile, is introduced. Replicas were also fabricated with high replication fidelity using the photopolymerization method. The developed element was used in an MO disk head. A 57-dB C/N ratio, which is sufficient value for practical use was achieved for a 1-MHz readout signal.

© 1990 Optical Society of America

Original Manuscript: November 24, 1989
Published: December 1, 1990

Akitomo Ohba, Yasuo Kimura, Seizin Sugama, Ryuichi Katayama, and Yuzo Ono, "Reflection polarizing holographic optical element for compact magnetooptical disk heads," Appl. Opt. 29, 5131-5135 (1990)

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  1. Y. Kimura, S. Sugama, Y. Ono, “Compact Optical Head Using a Holographic Optical Element for CD Players,” Appl. Opt. 27, 668–671 (1988). [CrossRef] [PubMed]
  2. Y. Kimura, Y. Ono, “Polarizing Holographic Optical Element for Magneto-optical Disk Head,” in Technical Digest, First Microoptics Conference, Tokyo (1987), pp. 162–165.
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  5. A. Ohba et al., “Compact Magneto-optical Disk Head Using Reflection Polarizing Holographic Optical Element,” Proc. Soc. Phot-Opt. Instrum. Eng. 1078, 127–130 (1989).

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