Effects of a radiation dose in gamma-ray irradiation fields on holographic gratings formed by liquid crystal composites

Akifumi Ogiwara, Makishi Toda, Junya Ishido, Minoru Watanabe, Hiroshi Kakiuchida

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The radiation resistance of liquid crystal diffraction gratings was investigated using a cobalt 60 gamma radiation source until the radiation reached a total dose of 1000 Mrad, corresponding to a very severe amount of radiation. The optical properties of gratings exposed to gamma-ray radiation were discussed with internal observations such as polarization optical microscopy and scanning electron microscopy. The radiation resistance of liquid crystal diffraction gratings for gamma-ray irradiation has been explained by associating the optical characteristic measurements for liquid crystal composite materials, including a glass substrate, by analyzing the internal volume grating structure. The radiation resistance for anisotropic diffraction in the HPDLC grating has been explained by the modulation of the LC orientation in the polymer network configuration affected by the gamma-ray irradiation.

Original languageEnglish
Pages (from-to)514-528
Number of pages15
JournalOSA Continuum
Volume4
Issue number2
DOIs
Publication statusPublished - Feb 15 2021
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Effects of a radiation dose in gamma-ray irradiation fields on holographic gratings formed by liquid crystal composites'. Together they form a unique fingerprint.

Cite this