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Proceedings Paper

Multiple-wavelength partial coherence interferometry
Author(s): Wolfgang Drexler; Christoph K. Hitzenberger; Angela Baumgartner; Oliver Findl; Harald Sattmann; Adolf Friedrich Fercher
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Paper Abstract

We report on the possibility to reduce the coherence length and therefore improve the longitudinal resolution of partial coherence interferometry by an incoherent superposition of two spectrally displaced superluminescent diodes. If the object under investigation is dispersive, this resolution is limited due to a broadening of the detected signals. We demonstrate this group dispersion effect in water. In addition, two spectrally displaced diodes can also be used to measure the group refractive index and the group dispersion of ocular components. FIrst results of in vivo measurements in the cornea, the lens and along the axial length of human eyes are reported.

Paper Details

Date Published: 5 December 1996
PDF: 8 pages
Proc. SPIE 2930, Lasers in Ophthalmology IV, (5 December 1996); doi: 10.1117/12.260872
Show Author Affiliations
Wolfgang Drexler, Institute of Medical Physics/Univ. of Vienna (Austria)
Christoph K. Hitzenberger, Institute of Medical Physics/Univ. of Vienna (Austria)
Angela Baumgartner, Institute of Medical Physics/Univ. of Vienna (Austria)
Oliver Findl, General Hospital 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. 2930:
Lasers in Ophthalmology IV
Reginald Birngruber; Adolf Friedrich Fercher; Philippe Sourdille M.D., Editor(s)

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