Ultrafast electron microscope with high energy electron pulses produced by an intense femtosecond laser

超快电子显微镜，具有由强飞秒激光产生的高能电子脉冲

• 批准号: 18206006
• 负责人: SAKABE Shuji
• 金额: $ 31.2万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-18206006/
• 关键词: レーザープラズマ電子; 高強度フェムト秒レーザー; 電子線回折; パルス電子源; 高輝度電子線源; 電子顕微鏡; レ-ザ-プラズマ電子; 高強度フェムト秒レ-ザ-; 高輝度電子源; レーザープラズマ電

We have demonstrated single-shot measurement of electron diffraction patterns for a single-crystal gold foil using 340keV electron pulses accelerated by intense femtosecond laser pulses with an intensity of 2 10^<18>W/cm^2. The measured electron beam profile is faithfully reproduced by the numerical simulation of the electron trajectory, providing evidence that the electron pulse spontaneously expands in time owing to the velocity spread produced in the acceleration process, but is not distorted in an irreversible nonlinear manner. This study shows that the laser acceleration is promising for the development of pulse compression methods for single-shot femtosecond electron diffraction.

我们演示了用340keV的电子脉冲，用强度为2 10^<18>W/cm^2的强飞秒激光脉冲加速，单次测量单晶金箔的电子衍射图样。电子轨迹的数值模拟忠实地再现了测量到的电子束轮廓，证明了电子脉冲由于在加速过程中产生的速度扩散而在时间上自发膨胀，但没有以不可逆的非线性方式扭曲。该研究表明，激光加速对单次飞秒电子衍射脉冲压缩方法的发展是有希望的。

项目成果

Ablation of metals with femtosecond laser pulse Science and technology created by ultra-short

飞秒激光脉冲烧蚀金属超短创造的科学技术

• 发表时间: 2007
• 期刊: ultra-high-peak power lasers
• 作者: M. Hashida;S. Shimizu;S. Sakabe;M.Shibayama;M. Hashida
• 通讯作者: M. Hashida

Ti:sapphireマルチパス増幅システムにおけるパルスエネルギーの自己安定化

钛宝石多路放大系统中脉冲能量的自稳定

• 发表时间: 2008
• 作者: 遠藤仁;眞弓皓一,大坂昇,伊藤耕三,柴山充弘;時田 茂樹
• 通讯作者: 時田 茂樹

Skinning of argon clusters by Coulomb explosion induced with an intense femtosecond laser pulse

• DOI: 10.1103/physreva.74.043205
• 发表时间: 2006-10
• 期刊: Physical Review A
• 影响因子: 2.9
• 作者: S. Sakabe;K. Shirai;M. Hashida;S. Shimizu;S. Masuno

Carbon-nanotube cathode modified by femtosecond laser ablation

飞秒激光烧蚀改性碳纳米管阴极

• 发表时间: 2007
• 期刊: Journal of Physics: Conference Series 59
• 作者: M. Hashida;S. Shimizu;S. Sakabe
• 通讯作者: S. Sakabe

光増幅器

光放大器

• 发表时间: 2007