Spatially multiplexed dielectric tensor tomography

Authors:
Publisher website
Google Scholar
Abstract
Dielectric tensor tomography (DTT) enables the reconstruction of three-dimensional (3D) dielectric tensors, which provides a physical measure of 3D optical anisotropy. Herein, we present a cost-effective and robust method of DTT using spatial multiplexing. Exploiting two orthogonally polarized reference beams with different angles in an off-axis interferometer, two polarization-sensitive interferograms were multiplexed and recorded using a single camera. Then, the two interferograms were demultiplexed in the Fourier domain. By measuring the polarization-sensitive fields for various illumination angles, 3D dielectric tensor tomograms were reconstructed. The proposed method was experimentally demonstrated by reconstructing the 3D dielectric tensors of various liquid-crystal (LC) particles with radial and bipolar orientational configurations.
Funding Information
  • Institute for Information and Communications Technology Promotion (2021-0-00745)
  • Ministry of Science and ICT, South Korea (N11210014, N11220131)
  • National Research Foundation of Korea (2015R1A3A2066550)

This publication has 34 references indexed in Scilit: