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2023 Fiscal Year Final Research Report

Development of a Technique for Complete Synchronous Electric Field Detection of Terahertz Coherent Radiation Using Visible Cherenkov Radiation

Research Project

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Project/Area Number 18K11919
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 80040:Quantum beam science-related
Research InstitutionKyoto University

Principal Investigator

Takahashi Toshiharu  京都大学, 複合原子力科学研究所, 准教授 (00273532)

Project Period (FY) 2018-04-01 – 2024-03-31
Keywordsテラヘルツ / チェレンコフ放射 / 遷移放射 / コヒーレント放射 / 電子線形加速器
Outline of Final Research Achievements

In the process of developing an Electro-optic (EO) sampling technique of the electric field of high-intensity coherent transition radiation in the sub-terahertz range, generated from short-bunch electron beams in an electron accelerator, using visible Cherenkov radiation generated from the same bunch as a probe without using an external laser, we were able to gain experimental insights into the properties of visible Cherenkov radiation and the elimination of stray light in optical transport. However, we did not achieve a demonstration of the EO detection technique.

Free Research Field

量子ビーム科学

Academic Significance and Societal Importance of the Research Achievements

電子加速器を使って発生させるサブテラヘルツ波長領域の大強度コヒーレント放射を用いて物質の光学的な性質を特徴付けるパラメータを求める際、間接的に計算上のテクニックを使うことなく、測定された電場から直接求めることができるようになること、また検出器に使用する液体ヘリウムの世界的な供給不足の影響も避けることができることから、サブテラヘルツ・ミリ波領域における物質の光学的性質のデータベース構築に貢献する。

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Published: 2025-01-30  

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