Journal article

Numerical dispersion compensation for Partial Coherence Interferometry and Optical Coherence Tomography

Dispersive samples introduce a wavelength dependent phase distortion to the probe beam. This leads to a noticeable loss of depth resolution in high resolution OCT using broadband light sources. The standard technique to avoid this consequence is to balance the dispersion of the sample by arranging a dispersive material in the reference arm. However, the impact of dispersion is depth dependent. A corresponding depth dependent dispersion balancing technique is diffcult to implement. Here we present a numerical dispersion compensation technique for Partial Coherence Interferometry (PCI) and Optical Coherence Tomography (OCT) based on numerical correlation of the depth scan signal with a depth variant kernel. It can be used a posteriori and provides depth dependent dispersion compensation. Examples of dispersion compensated depth scan signals obtained from microscope cover glasses are presented. (C) 2001 Optical Society of America.


    Univ Vienna, Inst Med Phys, A-1090 Vienna, Austria. Nicholas Copernicus Univ, Dept Phys, PL-87100 Torun, Poland. EPFL, Inst Opt Appl, CH-1015 Lausanne, Switzerland. Fercher, AF, Univ Vienna, Inst Med Phys, Waehringer 13, A-1090 Vienna, Austria.

    ISI Document Delivery No.: 498AT

    Times Cited: 15

    Cited Reference Count: 12


    Record created on 2006-10-03, modified on 2017-05-10


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