Terahertz emitter combining microstructures and nanostructures made of metal ink

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K17530
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Optical engineering, Photon science
• Research Institution: Osaka University
• Principal Investigator: Kato Kosaku 大阪大学, レーザー科学研究所, 特任研究員 (40751087)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: テラヘルツ波 / 金属インク / プラズモン共鳴 / メタマテリアル

Outline of Final Research Achievements

We fabricated terahertz emitters combining microstructures resonating with terahertz waves and nanostructures resonating with light, and investigated their properties. A film with spontaneously formed nanostructures was made by coating a fused silica substrate with a silver nano-particle ink and baking it. By removing part of this film with laser machining, split ring resonators with a size of several tens micrometers were fabricated. Peak frequencies in the terahertz spectra emitted by femtosecond laser pulse irradiation depend on the size and direction of the ring, and are confirmed to be near the resonant frequency of the ring measured by terahertz time-domain spectroscopy.

Free Research Field

レーザー分光