Open AccessPolarization-sensitive imaging with simultaneous bright- and dark-field optical coherence tomography
Author(s) -
Pablo Eugui,
Danielle J. Harper,
Antonia Lichtenegger,
Marco Augustin,
Conrad W. Merkle,
Adelheid Wöehrer,
Christoph K. Hitzenberger,
Bernhard Baumann
Publication year - 2019
Publication title -
optics letters/optics index
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.44.004040
Subject(s) - optics , optical coherence tomography , birefringence , polarization (electrochemistry) , scattering , light scattering , materials science , optical tomography , tomography , optical fiber , physics , chemistry
We present a polarization-sensitive (PS) extension for bright- and dark-field (BRAD) optical coherence tomography imaging. Using a few-mode fiber detection scheme, the light backscattered at different angles is separated, and the BRAD images of tissue scattering are generated. A calibration method to correct for the fiber birefringence is proposed. Since particle scattering profiles are polarization dependent, a PS detection extends the capabilities for investigating the scattering properties of biological tissues. Both phantoms consisting of different-sized microparticles and a brain tissue specimen were imaged to validate the system performance and demonstrate the complementary image contrast.