Decrypting binary phase patterns by amplitude

Jesper Glückstad; Vincent R. Daria; Peter J. Rodrigo

doi:10.1117/1.1783277

Decrypting binary phase patterns by amplitude

Jesper Glückstad^*, Vincent R. Daria, Peter J. Rodrigo

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

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.

Original language	English
Pages (from-to)	2250-2258
Number of pages	9
Journal	Optical Engineering
Volume	43
Issue number	10
DOIs	https://doi.org/10.1117/1.1783277
Publication status	Published - Oct 2004
Externally published	Yes

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title = "Decrypting binary phase patterns by amplitude",

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.",

keywords = "Generalized phase contrast, Phase encryption, Spatial light modulator",

author = "Jesper Gl{\"u}ckstad and Daria, \{Vincent R.\} and Rodrigo, \{Peter J.\}",

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AU - Daria, Vincent R.

AU - Rodrigo, Peter J.

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AB - 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.

KW - Generalized phase contrast

KW - Phase encryption

KW - Spatial light modulator

UR - https://www.scopus.com/pages/publications/9744222681

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DO - 10.1117/1.1783277

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JO - Optical Engineering

JF - Optical Engineering

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Decrypting binary phase patterns by amplitude

Abstract

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