title: Flexible contrast for low-coherence interference microscopy by Fourier-plane filtering with a spatial light modulator.
abstract: 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.
authors.affiliation: Christian Doppler Laboratory for Microscopic and Spectroscopic Material Characterisation, Johannes Kepler University Linz, A-4040 Linz, Austria. stefan.schausberger@jku.at
authors.forename: Stefan E
authors.initials: SE
authors.lastname: Schausberger
authors.forename: Bettina
authors.initials: B
authors.lastname: Heise
authors.forename: Christian
authors.initials: C
authors.lastname: Maurer
authors.forename: Stefan
authors.initials: S
authors.lastname: Bernet
authors.forename: Monika
authors.initials: M
authors.lastname: Ritsch-Marte
authors.forename: David
authors.initials: D
authors.lastname: Stifter
mesh_terms: D005583:Fourier Analysis; D005898:Glass; D007091:Image Processing, Computer-Assisted; D007368:Interferometry; D008027:Light; D008853:Microscopy / Q000295:instrumentation / Q000379:methods*