Study on frequency conversion utilizing electromagnetic wave scattering from a moving boundary of electron-hole plasma optically generated on a semiconductor surface

2016 Fiscal Year Final Research Report

• Project/Area Number: 26286060
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Optical engineering, Photon science
• Research Institution: Nagoya Institute of Technology
• Principal Investigator: BAE Jongsuck 名古屋工業大学, 工学(系)研究科(研究院), 教授 (20165525)
• Co-Investigator(Kenkyū-buntansha): 莅戸 立夫 富山大学, その他の研究科, 准教授 (00261149) ; 有吉 誠一郎 豊橋技術科学大学, 工学(系)研究科(研究院), 准教授 (20391849)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 光エレクトロニクス / テラヘルツ発生 / ドップラー効果

Outline of Final Research Achievements

Frequency up-conversion from millimeter waves of frequencies between 90-100 GHz to 0.3 THz-band terahertz waves through the Doppler effect have been observed experimentally using a slot transmission line on an optically excited GaAs substrate. The maximum frequency up-conversion ratio was 4.2. The measured amplitudes of the terahertz waves, however, have been lower than one tenth compared to theoretical predictions. The cause of that is still under investigation. In this research project, new conversion method from periodic static fields to terahertz waves using a metal waveguide as a transmission line has been proposed and experimentally demonstrated. Using the conversion method, periodic terahertz waves at frequencies between 0.2-0.6 THz have been successfully generated.

Free Research Field

工学