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  4. Quantitative phase noise in a two-color low coherence Digital Holographic Microscope
 
conference paper

Quantitative phase noise in a two-color low coherence Digital Holographic Microscope

Monemhaghdoust, Zahra  
•
Montfort, Frederic
•
Emery, Yves
Show more
Bjelkhagen, Hi
•
Bove, Vm
2013
Practical Holography Xxvii: Materials And Applications
Conference on Practical Holography XXVII - Materials and Applications

In digital holographic microscopy (DHM), the long coherence length of laser light causes parasitic interferences due to multiple reflections in and by optical components in the optical path of the microscope and thus degrades the image quality. The parasitic effects are greatly reduced by using a short coherence length light. The main drawback of using a short coherence light source in an off-axis digital holographic microscope, is the reduction of the interference fringe contrast occurring in the field of view. Previously, we introduced a volume diffractive optical element (VDOE) placed in the reference arm of a DHM to correct the coherence plane tilt so as to obtain a high interference contrast throughout the field of view. Here, we experimentally quantify the spatial and temporal phase noise in the extracted phase image caused by non-homogeneities and scattering of the VDOE element itself. The results over five VDOEs show that the temporal phase noise is unchanged and a slight increase (up to 20%) is observed in the spatial phase noise. These results show that even with a low coherence source, a full field of view can be obtained with an off-axis DHM thanks to the VDOE without introducing significant additional phase noise.

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Type
conference paper
DOI
10.1117/12.2002413
Web of Science ID

WOS:000322530500018

Author(s)
Monemhaghdoust, Zahra  
Montfort, Frederic
Emery, Yves
Depeursinge, Christian
Moser, Christophe  
Editors
Bjelkhagen, Hi
•
Bove, Vm
Date Issued

2013

Publisher

Spie-Int Soc Optical Engineering

Publisher place

Bellingham

Published in
Practical Holography Xxvii: Materials And Applications
ISBN of the book

978-0-8194-9413-9

Total of pages

6

Series title/Series vol.

Proceedings of SPIE

Volume

8644

Subjects

Diffraction gratings

•

Digital holographic microscopy

•

Phase noise

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LAPD  
Event nameEvent placeEvent date
Conference on Practical Holography XXVII - Materials and Applications

San Francisco, CA

FEB 03-04, 2013

Available on Infoscience
October 1, 2013
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/95898
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