Multispectral Wavefronts Retrieval in Digital Holographic Three-Dimensional Imaging Spectrometry

Details Multispectral Wavefronts Retrieval in Digital Holographic Three-Dimensional Imaging Spectrometry Multispectral Wavefronts Retrieval in Digital Holographic Three-Dimensional Imaging Spectrometry

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1236..167y&link_type=abstract

INTERNATIONAL CONFERENCE ON ADVANCED PHASE MEASUREMENT METHODS IN OPTICS AND IMAGING. AIP Conference Proceedings, Volume 1236,

Physics

Optics

Holographic Interferometry, Fresnel Diffraction, Coherence, Interference, Fourier Transform Spectra, Holographic Interferometry, Other Holographic Techniques, Filters, Zone Plates, And Polarizers, Coherence, Interference, Fourier Optics

Scientific paper

This paper deals with a recently developed passive interferometric technique for retrieving a set of spectral components of wavefronts that are propagating from a spatially incoherent, polychromatic object. The technique is based on measurement of 5-D spatial coherence function using a suitably designed interferometer. By applying signal processing, including aperture synthesis and spectral decomposition, one may obtains a set of wavefronts of different spectral bands. Since each wavefront is equivalent to the complex Fresnel hologram at a particular spectrum of the polychromatic object, application of the conventional Fresnel transform yields 3-D image of different spectrum. Thus, this technique of multispectral wavefronts retrieval provides a new type of 3-D imaging spectrometry based on a fully passive interferometry. Experimental results are also shown to demonstrate the validity of the method.

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