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Proceedings Paper

Electron beam lithographic fabrication of computer-generated holograms
Author(s): Andrew A. West; Robin W. Smith
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Paper Abstract

The fabrication of a range of computer-generated holographic optical elements by means of electron beam lithography is described. These elements can be considered as the combination of two overlapped cylindrical diffractive optical elements of the same focal length. The imaging properties of both orthogonal and non-orthogonal combinations are discussed. These elements produce sets of line foci at different distances and orientations determined by the angle between the two cylindrical elements. The detailed features of the line foci, 'macro- and micro-beading' can be related to the structure of the combined gratings. Equations identifying the locations of the foci are presented, and these suggest a distance measuring technique which might be applicable to machine vision.

Paper Details

Date Published: 1 September 1991
PDF: 10 pages
Proc. SPIE 1507, Holographic Optics III: Principles and Applications, (1 September 1991); doi: 10.1117/12.47039
Show Author Affiliations
Andrew A. West, Imperial College of Science, Technology and Medicine (United Kingdom)
Robin W. Smith, Imperial College of Science, Technology and Medicine (United Kingdom)

Published in SPIE Proceedings Vol. 1507:
Holographic Optics III: Principles and Applications
G. Michael Morris, Editor(s)

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