Holography

Identifying a dot-matrix hologram by the position-error curves of its grating dots

[+] Author Affiliations
Sheng Lih Yeh

Lunghwa University of Science and Technology, Department of Mechanical Engineering, 300, Sec. 1, Wanshou Rd., Kueishan, Taoyuan County, Taiwan

Opt. Eng. 46(2), 025801 (February 23, 2007). doi:10.1117/1.2709852
History: Received December 29, 2005; Revised May 26, 2006; Accepted May 30, 2006; Published February 23, 2007
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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.

Figures in this Article
© 2007 Society of Photo-Optical Instrumentation Engineers

Topics

Holograms ; Matrices

Citation

Sheng Lih Yeh
"Identifying a dot-matrix hologram by the position-error curves of its grating dots", Opt. Eng. 46(2), 025801 (February 23, 2007). ; http://dx.doi.org/10.1117/1.2709852


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