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Proceedings Paper

Digital optics, digital holography, and optical encryption
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Paper Abstract

The availability of high quality Spatial Light Modulators (SLMs) and high-resolution cameras have made it technologically feasible to perform many optical signal-processing functions in a relatively inexpensive manner. Furthermore, recent fast algorithms have been proposed to compute Linear Canonical Transforms (LCTs), which may be used to simulate paraxial optical systems. Optical Encryption offers the possibility of high-speed parallel encryption of image data. Such encryption/decryption may involve the capture of full field information, i.e. phase and intensity. Applications of Digital Holography go beyond applications to optical encryption. They include Holographic Interferometry (metrology) and Holographic displays. In this paper we discuss the design and analysis of systems used in the capture, encryption/decryption and display of 2-D (image) data and present our recent experimental and theoretical results.

Paper Details

Date Published: 10 September 2005
PDF: 15 pages
Proc. SPIE 5908, Optical Information Systems III, 59080O (10 September 2005); doi: 10.1117/12.617616
Show Author Affiliations
D. S. Monaghan, Univ. College Dublin (Ireland)
U. Gopinathan, Univ. College Dublin (Ireland)
B. M. Hennelly, Univ. College Dublin (Ireland)
T. J. Naughton, National Univ. of Ireland Maynooth (Ireland)
J. T. Sheridan, Univ. College Dublin (Ireland)

Published in SPIE Proceedings Vol. 5908:
Optical Information Systems III
Bahram Javidi; Demetri Psaltis, Editor(s)

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