Tunable color filter with surface plasmon resonance using organic photorefractive composite

TLDR: A tunable color filter with surface plasmon resonance (SPR) excited by a photorefractive diffraction grating, modified by alteration of the optic configuration, where the wavelength at which the SPR excitation led to a reflection minimum changed and the spectrum of the reflected light also changed.

Abstract: We report on a tunable color filter with surface plasmon resonance (SPR), excited by a photorefractive (PR) diffraction grating When a white light was incident at the diffraction grating formed by a PR effect, the SPR generated at a metal-dielectric material interface was absorbed, and the reflected light showed a complementary color When the period of the PR diffraction grating was modified by alteration of the optic configuration, the wavelength at which the SPR excitation led to a reflection minimum changed and the spectrum of the reflected light also changed A well-known equation was used to help us understand the experimental results All experimental results are in good agreement with the calculation predictions This result could lead to a new type of tunable color filter