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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 23 — Dec. 1, 2010
  • pp: 3919–3921

Common-path phase-shifting lensless holographic microscopy

Vicente Micó and Javier García  »View Author Affiliations


Optics Letters, Vol. 35, Issue 23, pp. 3919-3921 (2010)
http://dx.doi.org/10.1364/OL.35.003919


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Abstract

We present an approach capable of high-NA imaging in a lensless digital in-line holographic microscopy layout even outside the Gabor’s regime. The method is based on spatial multiplexing at the sample plane, allowing a common-path interferometric architecture, where two interferometric beams are generated by a spatial light modulator (SLM) prior to illuminating the sample. The SLM allows phase-shifting interferometry by phase modulation of the SLM diffracted beam. After proper digital processing, the complex amplitude distribution of the diffracted object wavefront is recovered and numerically propagated to image the sample. Experimental results are reported that validate the proposed method.

© 2010 Optical Society of America

OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(100.2000) Image processing : Digital image processing
(110.0180) Imaging systems : Microscopy
(090.1995) Holography : Digital holography
(070.7345) Fourier optics and signal processing : Wave propagation

ToC Category:
Holography

History
Original Manuscript: August 24, 2010
Revised Manuscript: October 26, 2010
Manuscript Accepted: October 31, 2010
Published: November 22, 2010

Citation
Vicente Micó and Javier García, "Common-path phase-shifting lensless holographic microscopy," Opt. Lett. 35, 3919-3921 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-23-3919


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