Optical Review
Print ISSN : 1340-6000
ISSN-L : 1340-6000
A Holographic Optical Element for an Integrated Optical Head
Yoshiaki KOMMAShin–ichi KADOWAKISeiji NISHINOYoshikazu HORIMakoto KATO
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1996 Volume 3 Issue 4 Pages 251-257

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Abstract
Diffraction efficiencies of a reflection-type blazed holographic optical element (HOE) are analyzed and optimized for use in a totally integrated optical head. The HOE, consisting of four-step phase levels, was fabricated by a double-etching process. By controlling each etching depth, signal light power efficiency was maximized to 16% and the power ratio of noise components relative to signal light power was suppressed to 21%. Diffraction efficiencies were made uniform over the entire HOE in oblique positioning by controlling the respective step widths of the HOE.
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© 1996 by the Optical Society of Japan
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