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Optics Letters

Optics Letters

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  • Vol. 36, Iss. 1 — Jan. 1, 2011
  • pp: 79–81

Off-axis compressed holographic microscopy in low-light conditions

Marcio Marim, Elsa Angelini, Jean-Christophe Olivo-Marin, and Michael Atlan  »View Author Affiliations


Optics Letters, Vol. 36, Issue 1, pp. 79-81 (2011)
http://dx.doi.org/10.1364/OL.36.000079


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Abstract

This Letter reports a demonstration of off-axis compressed holography in low-light level imaging conditions. An acquisition protocol relying on a single exposure of a randomly undersampled diffraction map of the optical field, recorded in the high heterodyne gain regime, is proposed. The image acquisition scheme is based on compressed sensing, a theory establishing that near-exact recovery of an unknown sparse signal is possible from a small number of nonstructured measurements. Image reconstruction is further enhanced by introducing an off-axis spatial support constraint to the image estimation algorithm. We report accurate experimental recovering of holographic images of a resolution target in low-light conditions with a frame exposure of 5 μs , scaling down measurements to 9% of random pixels within the array detector.

© 2011 Optical Society of America

OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(180.3170) Microscopy : Interference microscopy

ToC Category:
Holography

History
Original Manuscript: September 20, 2010
Revised Manuscript: November 18, 2010
Manuscript Accepted: November 19, 2010
Published: January 6, 2011

Virtual Issues
Vol. 6, Iss. 2 Virtual Journal for Biomedical Optics

Citation
Marcio Marim, Elsa Angelini, Jean-Christophe Olivo-Marin, and Michael Atlan, "Off-axis compressed holographic microscopy in low-light conditions," Opt. Lett. 36, 79-81 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-1-79

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