Optical tomography at the microscopic scale by means of a numerical low coherence holographic technique

Etienne Cuche*, Patrick Poscio, Christian Depeursinge

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

20 Scopus citations

Abstract

We describe here a numerical application of the Optical Low-Coherence Holographic Microscopy (OLCHM) technique. A low coherent source illuminates an object and the backscattered light interfere with a reference wave which optical path's length can be precisely adjusted. Holograms are recorded by a CCD camera and numerically reconstructed. With this technique optical tomography can be performed with a single scan along the optical axis. The transverse resolution of the reconstructed images mainly depends on the optics components used and approaches the diffraction limit. Using a Ti:Sapphire laser a depth resolution of about 30 μm has been achieved.

Original languageEnglish (US)
Pages (from-to)61-66
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume2927
DOIs
StatePublished - Dec 1 1996
EventOptical and Imaging Techniques for Biomonitoring II - Vienna, Austria
Duration: Sep 7 1996Sep 7 1996

ASJC Scopus subject areas

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

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