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Flexible contrast for low-coherence interference microscopy by Fourier-plane filtering with a spatial light modulator. 2010
Stefan E Schausberger, and
Bettina Heise, and
Christian Maurer, and
Stefan Bernet, and
Monika Ritsch-Marte, and
David Stifter
Christian Doppler Laboratory for Microscopic and Spectroscopic Material Characterisation, Johannes Kepler University Linz, A-4040 Linz, Austria. stefan.schausberger@jku.at
We propose a full-field low-coherence interference (LCI) microscope that can provide different contrast modes using Fourier-plane filtering by means of a spatial light modulator. By altering the phase and spatial frequencies of the backreflected wavefront from the sample arm of the interferometer, we are able to change the contrast in the depth-resolved LCI images. We demonstrate that different types of contrast modes, such as, e.g., spiral phase contrast, can successfully be emulated to provide specific enhancement of internal structures and edges and to reveal complementary details within the samples under investigation.
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