Quantitative phase reconstruction for orthogonal-scanning differential phase-contrast optical coherence tomography.
We present differential phase-contrast optical-coherence tomography (DPC-OCT) with two transversally separated probing beams to sense phase gradients in various directions by employing a rotatable Wollaston prism. In combination with a two-dimensional mathematical-reconstruction algorithm based on a regularized shape from shading method, accurate quantitative phase maps can be determined from a set of two orthogonal en-face DPC-OCT images, as exemplified on various technical samples.
Research Center for Non-Destructive Testing GmbH, Hafenstrasse 47-51, 4020 Linz, Austria. Bettina.Heise@jku.at
Bettina
B
Heise
David
D
Stifter
D009821:Oils / Q000737:chemistry; D011108:Polymers / Q000737:chemistry; D012399:Rotation; D013997:Time Factors; D041623:Tomography, Optical Coherence / Q000295:instrumentation / Q000379:methods*
D009821:Oils; D011108:Polymers