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Proceedings Paper

Write noise from optical heads with nonachromatic beam expansion prisms
Author(s): David B. Kay; Scott B. Chase; Edward C. Gage; Barry D. Silverstein
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Paper Abstract

The purposes for achromatizing the optics in an optical recording head are: (a) to reduce focal shifts of the spot at the disk and in the focus sensing system, and (b) to eliminate lateral shifts of the spot at the disk when the laser wavelength shifts. Reference 1 discusses the use of a very low dispersion glass in the fabrication of molded singlet lenses for use in optical data storage. This paper discusses an effect of a lateral shift of the focal spot that occurs, due to the dispersion in the beam expansion prism, when the laser mode hops.

Paper Details

Date Published: 1 July 1991
PDF: 5 pages
Proc. SPIE 1499, Optical Data Storage '91, (1 July 1991); doi: 10.1117/12.45941
Show Author Affiliations
David B. Kay, Eastman Kodak Co. (United States)
Scott B. Chase, Eastman Kodak Co. (United States)
Edward C. Gage, Eastman Kodak Co. (United States)
Barry D. Silverstein, Eastman Kodak Co. (United States)


Published in SPIE Proceedings Vol. 1499:
Optical Data Storage '91

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