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

Zahra Monemhaghdoust*, Frédéric Montfort, Yves Emery, Christian Depeursinge, Christophe Moser

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish (US)
Title of host publicationPractical Holography XXVI
Subtitle of host publicationMaterials and Applications
Volume8281
DOIs
StatePublished - 2012
Externally publishedYes
EventPractical Holography XXVI: Materials and Applications - San Francisco, CA, United States
Duration: Jan 22 2012Jan 25 2012

Other

OtherPractical Holography XXVI: Materials and Applications
CountryUnited States
CitySan Francisco, CA
Period01/22/1201/25/12

Keywords

  • Diffraction gratings
  • Digital holography
  • Microscopy

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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