Nanohole-array-based device for 2D snapshot multispectral imaging

We present a two-dimensional (2D) snapshot multispectral imager that utilizes the optical transmission characteristics of nanohole arrays (NHAs) in a gold film to resolve a mixture of input colors into multiple spectral bands. The multispectral device consists of blocks of NHAs, wherein each NHA has...

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Bibliographic Details
Published inScientific reports Vol. 3; no. 1; p. 2589
Main Authors Najiminaini, Mohamadreza, Vasefi, Fartash, Kaminska, Bozena, Carson, Jeffrey J. L.
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 05.09.2013
Nature Publishing Group
Subjects
639/166/987
639/624/1107/527/1989
639/925/927/1021
639/925/930/2735
Bandwidths
Cameras
CMOS
Color
Colorimetry - instrumentation
Efficiency
Equipment Design
Equipment Failure Analysis
Humanities and Social Sciences
I.R. radiation
Image Enhancement - instrumentation
multidisciplinary
Nanopores - ultrastructure
Nanotechnology - instrumentation
Periodicity
Photography - instrumentation
Polymethyl methacrylate
Science
Spectrum allocation
Spectrum analysis
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Summary:We present a two-dimensional (2D) snapshot multispectral imager that utilizes the optical transmission characteristics of nanohole arrays (NHAs) in a gold film to resolve a mixture of input colors into multiple spectral bands. The multispectral device consists of blocks of NHAs, wherein each NHA has a unique periodicity that results in transmission resonances and minima in the visible and near-infrared regions. The multispectral device was illuminated over a wide spectral range and the transmission was spectrally unmixed using a least-squares estimation algorithm. A NHA-based multispectral imaging system was built and tested in both reflection and transmission modes. The NHA-based multispectral imager was capable of extracting 2D multispectral images representative of four independent bands within the spectral range of 662 nm to 832 nm for a variety of targets. The multispectral device can potentially be integrated into a variety of imaging sensor systems.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep02589