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Optical Engineering

Identifying a dot-matrix hologram by the position-error curves of its grating dots
Author(s): Sheng-Lih L. Yeh
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Paper Abstract

Dot-matrix holograms created by two-beam writers usually contain grating-dot position errors. The position errors may result from lens aberrations, rotation mechanisms, or beam direction inaccuracy, so they are not controllable. When the components of a two-beam writer are not reinstalled, the position errors of the grating dots created by the writer can be reproduced. Hence, position-error curves derived from the regression of the data points on position-error diagrams have some high-end applications. Two applications of position-error curves of dot-matrix holograms are proposed. The first application is to determine whether a dot-matrix hologram was created by a specified two-beam writer or not. The second application is to determine if two dot-matrix holograms were created by the same two-beam writer with the same component installation.

Paper Details

Date Published: 1 February 2007
PDF: 7 pages
Opt. Eng. 46(2) 025801 doi: 10.1117/1.2709852
Published in: Optical Engineering Volume 46, Issue 2
Show Author Affiliations
Sheng-Lih L. Yeh, Lunghwa Univ. of Science and Technology (Taiwan)


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