Development of wavelength tuning type ultrafast THz switching by one-dimensional photonic crystal containing metamaterials

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K04697
• 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: Kagawa University
• Principal Investigator: Tsurumachi Noriaki 香川大学, 工学部, 教授 (50372719)
• Co-Investigator(Renkei-kenkyūsha): Shimnokawa Fusao 香川大学, 工学部, 教授 (90580598) ; Funahashi Masahiro 香川大学, 工学部, 教授 (90262287)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: メタマテリアル / テラヘルツ波 / フォトニック結晶 / 超高速現象

Outline of Final Research Achievements

In order to carry out research on tunable ultrafast THz switch by hybridization of metamaterial and one-dimensional photonic crystal, we studied the following element technologies. First, a THz metamaterials such as a cut wire or an electric split ring resonator was fabricated on a semiconductor substrate, and their optical properties were evaluated. Next, broadband high intensity THz wave generation from air was carried out by dichroic laser induced plasma method. Finally, we analyzed the resonance characteristics of Fabry - Perot microcavity using wire grid and found that mode splitting occurs when metamaterial is introduced into the cavity. As a result, a useful wavelength variable type THz switch becomes possible.

Free Research Field

光物性物理学・量子非線形光学