The metal wire grid surface plasmon sensor by using the optical anisotropy of GaN

2016 Fiscal Year Final Research Report

• Project/Area Number: 26390082
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Optical engineering, Photon science
• Research Institution: Mie University
• Principal Investigator: Motogaito Atsushi 三重大学, 工学研究科, 准教授 (00303751)
• Co-Investigator(Renkei-kenkyūsha): HIRAMATSU Kazumasa 三重大学, 大学院工学研究科, 教授 (50165205)
• Research Collaborator: NAKAMURA Shohei ; MIYAZAKI Jyun ; MORISHITA Yuuta ; KITO Masanori ; MITO Shinya ; TSUJIMURA Kazuki ; NAKAJIMA Tomoyasu ; YAMADA Taishi ; ITO Yusuke ; WATANABE Naoya
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 表面プラズモン / ワイヤーグリッド構造 / 表面プラズモンセンサー / 光学異方性

Outline of Final Research Achievements

In this study, as a basic study aiming at realization of a propagation type surface plasmon sensor capable of high sensitivity detection of high refractive index medium with a refractive index of 1.5 or more by using optical anisotropic GaN and metal wire grid structure, We fabricated and characterized the surface plasmon sensor using the Au thin film on the GaP substrate and the Au one dimensional diffraction grating on the glass substrate.
It was clarified that the medium with the refractive index up to 1.700 can be detected by using the surface plasmon sensor using Au one dimensional diffraction grating on the glass substrate. We also show that by improving sensitivity and FOM value, it becomes possible to realize a surface plasmon sensor using a GaN substrate excellent in chemical resistance.

Free Research Field

ナノ光学、照明工学、半導体工学