Open AccessPolarization imaging camera with a waveplate array fabricated with a femtosecond laser inside silica glass
Author(s) -
Takafumi Ohfuchi,
Masaaki Sakakura,
Yuya Yamaoka,
Naoaki Fukuda,
Toshio Takiya,
Yasuhiko Shimotsuma,
Kiyotaka Miura
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.023738
Subject(s) - waveplate , optics , materials science , femtosecond , polarization (electrochemistry) , transmittance , laser , optoelectronics , physics , chemistry
In this study, we demonstrate a polarization imaging camera with a waveplate array of a silica glass fabricated by femtosecond (fs) laser direct writing. To use a waveplate array of silica glass for polarization imaging, non-uniformity of the transmittance and retardance in the waveplates must be considered. Therefore, we used a general method of polarization analysis with system matrices determined experimentally for all the units in the waveplate array. We found that a figure of merit based on the determinant of the system matrix could be applied to improve the accuracy of analysis and the robustness to the retardance dispersion for both the simulated and the fabricated waveplate array.