Research and Development of A High Peak-Power Quasi-Monochromatic THz Light Source with the Combination of Velocity Bunchings

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K12631
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 80040:Quantum beam science-related
• Research Institution: Nihon University
• Principal Investigator: SUMITOMO Yoske 日本大学, 理工学部, 助教 (70729243)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: テラヘルツ光 / アンジュレーター放射 / コヒーレント放射 / 電子ビーム位相調整 / スピンオフ成果

Outline of Final Research Achievements

We proposed a new way of electron pulse compression method, namely, the “combination of velocity bunchings”, and applied for the generation of cutting-edge terahertz light sources with distinguished properties including quasi-monochromaticities, high-peak powers, short pulse durations, and continuously variable wavelengths, that are strong points of accelerator based light sources. We successfully observed terahertz lights generated from the undulator. In addition, thanks to the accumulated knowledge of non-linear enhancements during this project, we initiated an ambitious research digging into a new direction over multiple research areas. It is interesting that this new project was worth receiving the invitation from international conference.

Free Research Field

量子ビーム科学

Academic Significance and Societal Importance of the Research Achievements

テラヘルツ領域の光科学は、近い将来での産業応用性の高さから先端科学として世界的に大きな着目を集めており、産業応用化にむけた黎明期であるといえる。近年の急速な発展はテラヘルツ光の使用難易度が低下したことが一因であるが、テラヘルツ光との相性の良さを活かした上で加速器が得意とするユニークな特徴を持つテラヘルツ光源開発をこの黎明期に行うことで、テラヘルツ科学の進展を先導する可能性を高めると期待される。