title: Quantifying three-dimensional optic axis using polarization-sensitive optical coherence tomography.
abstract: The optic axis of birefringent samples indicates the direction of optical anisotropy, which should be described in three-dimensional (3-D) space. We present a method to quantify the complete 3-D optic axis orientation calculated from in-plane optic axis measurements from a polarization-sensitive optical coherence tomography system. The in-plane axis orientations with different illumination angles allow the calculation of the necessary polar angle. The method then provides the information to produce the actual birefringence. The method and results from a biological sample are presented.
authors.forename: Chao J
authors.initials: CJ
authors.lastname: Liu
authors.forename: Adam J
authors.initials: AJ
authors.lastname: Black
authors.forename: Hui
authors.initials: H
authors.lastname: Wang
authors.forename: Taner
authors.initials: T
authors.lastname: Akkin
mesh_terms: D016880:Anisotropy; D001718:Birefringence; D021621:Imaging, Three-Dimensional; D061848:Optical Imaging / Q000379:methods*; D041623:Tomography, Optical Coherence