Electric Field Tuning of Surface Plasmon Resonance Using Vertical Alignment Liquid Crystals on a Silver Grating Structure

Yasuhiro Ogawa Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Yamada-oka, Suita, Osaka, JapanCorrespondence[email protected]

Masayoshi Ojima Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Yamada-oka, Suita, Osaka, Japan

Koji Murata Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Yamada-oka, Suita, Osaka, Japan

Yasumasa Fujiwara Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Yamada-oka, Suita, Osaka, Japan

Hitoshi Kubo Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Yamada-oka, Suita, Osaka, Japan

Hiroyuki Yoshida Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Yamada-oka, Suita, Osaka, Japan

Akihiko Fujii Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Yamada-oka, Suita, Osaka, Japan

Masanori Ozaki Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Yamada-oka, Suita, Osaka, Japan

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Abstract

We report electric field tuning of surface plasmon resonance (SPR) by controlling the polarization state of incident light using vertical alignment liquid crystal (VA-LC) layer. Excitation of SPR depends on the polarization state of incident light and incident angle. We fabricated a metallic grating structure in order to excite SPR, and then we investigated the applied voltage dependence of reflection spectrum. Continuous tuning of SPR is achieved as a result of the polarization change of incident light by controlling the birefringence of the LC layer.

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Acknowledgment

This works was supported by Photonics Advanced Research Center of Osaka University.

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Electric Field Tuning of Surface Plasmon Resonance Using Vertical Alignment Liquid Crystals on a Silver Grating Structure

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Electric Field Tuning of Surface Plasmon Resonance Using Vertical Alignment Liquid Crystals on a Silver Grating Structure

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