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.
© 2022 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Herve Hugonnet, Seungwoo Shin, and YongKeun Park
Opt. Express 31(3) 3774-3783 (2023)
Hanno Hammer and William R. B. Lionheart
J. Opt. Soc. Am. A 22(2) 250-255 (2005)
Hervé Hugonnet, Moosung Lee, Seungwoo Shin, and YongKeun Park
Opt. Express 31(18) 29654-29663 (2023)