Development of high spatial and temporal resolusion interference imaging system by using coherent soft x-ray

2015 Fiscal Year Final Research Report

• Project/Area Number: 25286086
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Quantum beam science
• Research Institution: The University of Tokushima
• Principal Investigator: Tomita Takuro 徳島大学, ソシオテクノサイエンス研究部, 准教授 (90359547)
• Co-Investigator(Kenkyū-buntansha): HASEGAWA Noboru 独立行政法人日本原子力研究開発機構, 量子ビーム応用研究部門, 研究職 (50360409) ; NISHIKINO Masaharu 独立行政法人日本原子力研究開発機構, 量子ビーム応用研究部門, 研究副主幹 (70370450) ; KAWACHI Tetsuya 独立行政法人日本原子力研究開発機構, 量子ビーム応用研究部門, 研究主幹 (40343941) ; SUEMOTO Tohru 東京大学, 物性研究所, 教授 (50134052) ; OHNISHI Naofumi 東北大学, 大学院工学研究科, 准教授 (20333859)
• Research Collaborator: EYAMA Takashi ; KAKIMOTO Naoya ; IZUTSU Rui
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 軟X線レーザー / 顕微計測 / 時間分解測定 / フェムト秒レーザーアブレーション / シングルショット計測

Outline of Final Research Achievements

In order to discuss the nanometer-scaled precise ablation phenomena induced by femtosecond laser irradiation, we constructed the femtosecond laser pump and the soft x-ray probe time resolved imaging system. From the reflective imaging, we succeed to reveal the expansion process of the exfoliated film associated with the femtosecond laser ablation. In addition, it has found that the vertical shape of the exfoliated films is similar to the intensity profile of the incident laser beam used for the laser ablation.
Moreover, by using the soft x-ray interferometry, the formation process of the exfoliated film that has formed within less than one nanosecond, and the formation process of the ablation crater has successfully observed.

Free Research Field

光物質科学