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Optics Letters

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  • Vol. 36, Iss. 7 — Apr. 1, 2011
  • pp: 1149–1151

Single-exposure two-dimensional superresolution in digital holography using a vertical cavity surface-emitting laser source array

Luis Granero, Zeev Zalevsky, and Vicente Micó  »View Author Affiliations


Optics Letters, Vol. 36, Issue 7, pp. 1149-1151 (2011)
http://dx.doi.org/10.1364/OL.36.001149


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Abstract

We present a new implementation capable of producing two-dimensional (2D) superresolution (SR) imaging in a single exposure by aperture synthesis in digital lensless Fourier holography when using angular multiplexing provided by a vertical cavity surface-emitting laser source array. The system performs the recording in a single CCD snapshot of a multiplexed hologram coming from the incoherent addition of multiple subholograms, where each contains information about a different 2D spatial frequency band of the object’s spectrum. Thus, a set of nonoverlapping bandpass images of the input object can be recovered by Fourier transformation (FT) of the multiplexed hologram. The SR is obtained by coherent addition of the information contained in each bandpass image while generating an enlarged synthetic aperture. Experimental results demonstrate improvement in resolution and image quality.

© 2011 Optical Society of America

OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(100.2000) Image processing : Digital image processing
(100.6640) Image processing : Superresolution
(090.1995) Holography : Digital holography

ToC Category:
Image Processing

History
Original Manuscript: November 9, 2010
Revised Manuscript: March 6, 2011
Manuscript Accepted: March 6, 2011
Published: March 25, 2011

Citation
Luis Granero, Zeev Zalevsky, and Vicente Micó, "Single-exposure two-dimensional superresolution in digital holography using a vertical cavity surface-emitting laser source array," Opt. Lett. 36, 1149-1151 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-7-1149


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