Abstract
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.
Original language | English (US) |
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Pages (from-to) | 610-615 |
Number of pages | 6 |
Journal | Optics Express |
Volume | 9 |
Issue number | 12 |
DOIs | |
State | Published - Jan 1 2001 |
Externally published | Yes |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics