Open AccessSingle-shot multispectral birefringence mapping by supercontinuum vector beams
Author(s) -
Shoji Motomizu,
Teruhiko Wakayama,
Hirokazu Ishida,
Hiroyuki Kowa,
Kazuyuki Sakaue,
Taisuke Miura,
Takeshi Higashiguchi
Publication year - 2020
Publication title -
applied optics
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 0.668
H-Index - 197
eISSN - 2155-3165
pISSN - 1559-128X
DOI - 10.1364/ao.393419
Subject(s) - optics , supercontinuum , birefringence , multispectral image , azimuth , physics , materials science , microscope , remote sensing , optical fiber , photonic crystal fiber , geology
We demonstrated a single-shot, multispectral birefringence mapping by use of a supercontinuum (SC) vector beam. The vector beam, which was generated by a pair of axially symmetric wave plates, leads to angular-variant polarization modulation to divide birefringence properties of a sample substrate into Fourier space. This strategy allows multispectral birefringence mapping from a single-shot image captured by a multispectral imaging detector. For SC vector beam analysis, we also compensated the retardance error of the axially symmetric wave plate in the superbroadband spectrum. Resolutions of retardance and azimuthal angle were 0.4° and 0.2°, respectively, and the spatial resolution was 60 µm. Those results are expected to provide us a single-shot, multispectral birefringence mapping with high spatial resolution as compared with using a scanning laser microscope. Our proposal has extendibility to develop high-speed, high-resolution birefringence imaging spectroscopy.