Multiple-wavelength partial coherence interferometry

Wolfgang Drexler; Christoph K. Hitzenberger; Angela Baumgartner; Oliver Findl; Harald Sattmann; Adolf Friedrich Fercher

doi:10.1117/12.260872

5 December 1996 Multiple-wavelength partial coherence interferometry

Wolfgang Drexler, Christoph K. Hitzenberger, Angela Baumgartner, Oliver Findl, Harald Sattmann, Adolf Friedrich Fercher

Proceedings Volume 2930, Lasers in Ophthalmology IV; (1996) https://doi.org/10.1117/12.260872
Event: BiOS Europe '96, 1996, Vienna, Austria

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.

Citation Download Citation

Wolfgang Drexler, Christoph K. Hitzenberger, Angela Baumgartner, Oliver Findl, Harald Sattmann, and Adolf Friedrich Fercher "Multiple-wavelength partial coherence interferometry", Proc. SPIE 2930, Lasers in Ophthalmology IV, (5 December 1996); https://doi.org/10.1117/12.260872

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