Single-pixel imaging using compressed sensing and wavelength-dependent scattering

We demonstrate two-dimensional imaging using illumination via a single-mode fiber with a multiply scattering tip and compressed sensing acquisition. We illuminate objects with randomly structured, but deterministic, speckle patterns produced by a coherent light source propagating through a TiO2-coat...

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Bibliographic Details
Published in:Optics letters 2016-03, Vol.41 (5), p.886-889
Main Authors: Shin, Jaewook, Bosworth, Bryan T, Foster, Mark A
Format: Article
Language:English
Subjects:
Coherent light
Detection
Fibers
Image Processing, Computer-Assisted
Imaging
Lasers
Optical Imaging - methods
Scattering
Scattering, Radiation
Speckle patterns
Titanium dioxide
Wavelengths
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Summary:We demonstrate two-dimensional imaging using illumination via a single-mode fiber with a multiply scattering tip and compressed sensing acquisition. We illuminate objects with randomly structured, but deterministic, speckle patterns produced by a coherent light source propagating through a TiO2-coated fiber tip. The coating thickness is optimized to produce speckle patterns that are highly sensitive to laser wavelength, yet repeatable. Images of the object are reconstructed from the characterized wavelength dependence of the speckle patterns and the wavelength dependence of the total light collected from the object using a single photodetector. Our imaging device is mechanically scan-free and insensitive to bending of the fiber, making it suitable for micro-endoscopy.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.41.000886