title: Contrast improvement by selecting ballistic-photons using polarization gating.
abstract: In this paper a new approach to improve contrast in optical subsurface imaging is presented. The method is based on time-resolved reflectance and selection of ballistic photons using polarization gating. Numerical studies with a statistical Monte Carlo method also reveal that weakly scattered diffuse photons can be eliminated by employing a small aperture and that the contrast improvement strongly depends on the single-scattering phase function. A possible experimental setup is discussed in the conclusions.
authors.affiliation: Institute of Fluid Dynamics, Swiss Federal Institute of Technology Zürich (ETH), Sonneggstrasse 3, 8092 Zürich, Switzerland. milos.sormaz@ifd.mavt.ethz.ch
authors.forename: Miloš
authors.initials: M
authors.lastname: Sormaz
authors.forename: Patrick
authors.initials: P
authors.lastname: Jenny