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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 29, Iss. 34 — Dec. 1, 1990
  • pp: 5127–5130

Holographic optical element for an optical disk head with spot-size detection servo optics

Yoshiaki Komma, Shin-ichi Kadowaki, Yoshikazu Hori, and Makoto Kato  »View Author Affiliations


Applied Optics, Vol. 29, Issue 34, pp. 5127-5130 (1990)
http://dx.doi.org/10.1364/AO.29.005127


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Abstract

A CGH construction of a holographic optical element (HOE) for an optical disk head with spot-size detection by means of superimposing two Fresnel zone plates is studied. Optimum parameter values for the ratio of segment to grating pitch (duty) and grating height are clarified from the viewpoint of total light power efficiency in the round trip optical system. The influences of higher-order diffracted beams near the first-order diffracted beams used to get signals on signal detection are shown to be small. The HOEs with almost optimum parameter values are fabricated and the desired diffracted spots, the expected total light power efficiency, and the small influence of higher-order diffracted beams are observed.

© 1990 Optical Society of America

History
Original Manuscript: November 15, 1989
Published: December 1, 1990

Citation
Yoshiaki Komma, Shin-ichi Kadowaki, Yoshikazu Hori, and Makoto Kato, "Holographic optical element for an optical disk head with spot-size detection servo optics," Appl. Opt. 29, 5127-5130 (1990)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-29-34-5127

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