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Optical Engineering

Decrypting binary phase patterns by amplitude
Author(s): Jesper Glückstad; Vincent Ricardo Daria; Peter John L. Rodrigo
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Paper Abstract

A method for decrypting a binary phase-only mask using an amplitude-only spatial light modulator key is proposed. The system is based on a double passage through a generalized phase contrast setup. A binary amplitude key is converted to phase for decrypting a binary phase-only encrypted pattern on the first passage. The decrypted phase pattern is subsequently converted to an intensity pattern on the second passage. A compact dual-path system, applicable in reflection geometry, is suggested for this decryption operation.

Paper Details

Date Published: 1 October 2004
PDF: 9 pages
Opt. Eng. 43(10) doi: 10.1117/1.1783277
Published in: Optical Engineering Volume 43, Issue 10
Show Author Affiliations
Jesper Glückstad, Risø National Lab. (Denmark)
Vincent Ricardo Daria, Risø National Lab. (Denmark)
Peter John L. Rodrigo, Risø National Lab. (Denmark)


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