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Proceedings Paper

Single shot dual wavelength full field imaging in low coherence digital holographic microscopy
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Paper Abstract

In off-axis digital holographic microscopy, short coherence length of the source results in an unwanted reduced field of view. A diffractive optical element (DOE) which combines two high efficiency transmission volume phase gratings holographically recorded into a thin photopolymer, is proposed to manipulate the coherence plane tilt of beam containing a plurality of wavelengths simultaneously. The DOE extends the interference pattern between object and reference beams in digital holographic microscope (DHM) over the whole physical beam overlap area. We experimentally demonstrate full field imaging in a commercial, two colors (685 nm and 794 nm) reflection digital holographic microscope (DHM). The synthetic wavelength created by the two colors extends the unambiguous depth range of the DHM from 0.39μm to 2.49μm .

Paper Details

Date Published: 9 February 2012
PDF: 6 pages
Proc. SPIE 8281, Practical Holography XXVI: Materials and Applications, 82810F (9 February 2012); doi: 10.1117/12.906390
Show Author Affiliations
Zahra Monemhaghdoust, LAPD, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Frederic Montfort, Lyncée Tec SA (Switzerland)
Yves Emery, Lyncée Tec SA (Switzerland)
Christian Depeursinge, Lyncée Tec SA (Switzerland)
LOA, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Christophe Moser, LAPD, Ecole Polytechnique Fédérale de Lausanne (Switzerland)

Published in SPIE Proceedings Vol. 8281:
Practical Holography XXVI: Materials and Applications
Hans I. Bjelkhagen; V. Michael Bove, Editor(s)

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