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The Korea Advanced Institute of Science and Technology (KAIST)

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Figure: Direct 3D anisotropy-imaging. a, Indirect access to 3D optical anisotropy using conventional methods. A 3D anisotropic sample is illuminated by polarized light (P), and its 2D images are recorded after passing through the analyser (A). This 2D polarization-sensitive imaging particularly conceals the axially inhomogeneous information of 3D anisotropy. The red rods depict the directors. á ñz denotes the average along the z axis. b, The present method directly visualizes 3D anisotropy. By solving the vectorial wave equation, 3D distribution of optical anisotropy is quantitatively reconstructed. no, ne, and e denote the ordinary RI, the extraordinary RI, and the dielectric tensor.

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