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Proceedings Paper

Circular encoding in large-area multiexposure holography
Author(s): R. Aliaga; Peter Choi; Hernan H. Chuaqui
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Paper Abstract

A novel method for encoding large number of large area holograms on the same recording surface using a multi-.exposure scheme is presented. The separation between each individual hologram is achieved by keeping constant the angle of incidence between the object and reference beams, while the azimuthal angle of the plane that contains both beams is changed between successive exposures. The reconstructed image is thus arranged along the arc of a circle. Art image-plane configuration is used to record the hologram. The resulting focal spot of the real image in the reconstruction allows each image to be easily separated with a suitable aperture even at high encoding density. The problems associated with the multi-exposure holographic technique, such as limited exposure latitude and low signal to noise ratio, were reduced using a solution physical developer, CPA-i, with standard holographic plates. More than 200 individual holograms were recorded on one single plate with the upper limit possible measured to exceed 1000.

Paper Details

Date Published: 1 April 1991
PDF: 8 pages
Proc. SPIE 1358, 19th Intl Congress on High-Speed Photography and Photonics, (1 April 1991); doi: 10.1117/12.24096
Show Author Affiliations
R. Aliaga, Blackett Lab./Imperial College London (Chile)
Peter Choi, Blackett Lab./Imperial College London (Chile)
Hernan H. Chuaqui, Blackett Lab./Imperial College London (Chile)

Published in SPIE Proceedings Vol. 1358:
19th Intl Congress on High-Speed Photography and Photonics
Peter W. W. Fuller, Editor(s)

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