Share Email Print
cover

Proceedings Paper

Differential phase measurements by partial coherence interferometry
Author(s): Christoph K. Hitzenberger; Angela Baumgartner; Harald Sattmann; Adolf Friedrich Fercher
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

In the past ten years, partial coherence interferometry has been developed and applied to high precision measurements of various biological and technical materials. This technique was extended to a high resolution, non contact imaging technique: optical coherence tomography (OCT). Recently, OCT was extended to perform polarization sensitive measurements and imaging. In this case, small phase variations caused by birefringence are measured and imaged. Small phase differences between adjacent beams can also be caused by other circumstances, e.g. by slight variations of geometric path length or refractive index. We present a method to measure these phase differences as a function of longitudinal and lateral position in the object. This method allows to determine the path length gradient with a resolution on the order of 10-5. Furthermore, we report first results obtained in simple test objects and present first differential phase contrast OCT tomograms.

Paper Details

Date Published: 30 April 1999
PDF: 7 pages
Proc. SPIE 3598, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications III, (30 April 1999); doi: 10.1117/12.347483
Show Author Affiliations
Christoph K. Hitzenberger, Institute of Medical Physics/Univ. of Vienna (Austria)
Angela Baumgartner, Institute of Medical Physics/Univ. of Vienna (Austria)
Harald Sattmann, Institute of Medical Physics/Univ. of Vienna (Austria)
Adolf Friedrich Fercher, Institute of Medical Physics/Univ. of Vienna (Austria)


Published in SPIE Proceedings Vol. 3598:
Coherence Domain Optical Methods in Biomedical Science and Clinical Applications III
Valery V. Tuchin; Joseph A. Izatt, Editor(s)

© SPIE. Terms of Use
Back to Top