Speckle reduction in line-scan laser projectors using binary phase codes

Speckle reduction in line-scan laser projectors using binary phase codes

A Barker binary phase code of maximum length 13 has previously been used for speckle reduction in line-scan laser projectors, and a speckle contrast factor decrease down to 13% has been achieved. In this Letter, Barker-like binary phase codes of lengths longer than 13 are used at an intermediate ima...

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Veröffentlicht in:Optics letters 2010-02, Vol.35 (3), p.444-446
Hauptverfasser: NADEEM AKRAM, M, KARTASHOV, Vladimir, ZHAOMIN TONG
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Sprache:eng
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Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Imaging and optical processing
Optics
Physics
Speckle and moire patterns
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container_title Optics letters
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creator NADEEM AKRAM, M
KARTASHOV, Vladimir
ZHAOMIN TONG
description A Barker binary phase code of maximum length 13 has previously been used for speckle reduction in line-scan laser projectors, and a speckle contrast factor decrease down to 13% has been achieved. In this Letter, Barker-like binary phase codes of lengths longer than 13 are used at an intermediate image plane. It is shown by theoretical calculation that a much better speckle reduction with a speckle contrast factor up to 6% can be achieved by using longer binary phase codes other than the Barker code.
doi_str_mv 10.1364/ol.35.000444
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subjects Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Imaging and optical processing
Optics
Physics
Speckle and moire patterns
title Speckle reduction in line-scan laser projectors using binary phase codes
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