Multiwavelength-selective phase-shifting digital holography without mechanical scanning

We propose multiwavelength in-line phase-shifting digital holography with a monochrome image sensor, single reference arm, and no mechanical scanning. We use phase-shifting interferometry selectively extracting wavelength information as a method to obtain multiwavelength object waves separately from...

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Bibliographic Details
Published in:Applied optics (2004) 2019-12, Vol.58 (34), p.G218
Main Authors: Tahara, Tatsuki, Endo, Yutaka
Format: Article
Language:English
Subjects:
Digital imaging
Holograms
Holography
Interferometry
Liquid crystals
Phase shifters
Scanning
Spatial light modulators
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Summary:We propose multiwavelength in-line phase-shifting digital holography with a monochrome image sensor, single reference arm, and no mechanical scanning. We use phase-shifting interferometry selectively extracting wavelength information as a method to obtain multiwavelength object waves separately from wavelength-multiplexed phase-shifted holograms. By exploiting a liquid crystal on silicon spatial light modulator with a wide phase-modulation range as an electrically driven phase shifter in this interferometry, we remove mechanically moving parts during phase shifting. Its effectiveness is experimentally demonstrated.
ISSN:1559-128X
2155-3165
DOI:10.1364/ao.58.00g218