Application of ultrafast optical technique to the time-domain X-ray spectroscopy using short-pulse characteristics of laser and synchrotron radiation

超快光学技术在利用激光和同步辐射的短脉冲特性的时域X射线光谱中的应用

• 批准号: 10554032
• 负责人: TAKAGI Yoshihiro
• 金额: $ 6.98万
• 依托单位: Himeji Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10554032/
• 关键词: ultrashort pulsed laser; sampling; pump-probe; synchrotron radiation; フェムト秒レーザー; ポンプ・プローブ分光; 時間分解分光法

We have developed a subpicosecond non-degenerate pump-probe spectrometer based on the optical sampling technique using a combination of asynchronous tunable femtosecond lasers. Owing to its simple instrumentation time evolution of subpicosecond to nanosecond excited molecular processes in solution and of exciton relaxation processes in semiconductor multiple quantum wells has been detected on an oscilloscope by an effective time base magnification of 760,000 times. Fast acquisition of the temporal profiles and ease of wavelength scanning allowed compilation of time-resolved absorption and excitation spectra. A possible extention of the spectrometer with one of the light sources being a synchrotron radiation instead of the femtosecond laser is discussed.

我们研制了一台基于光学取样技术的亚皮秒非简并泵浦-探测光谱仪。由于仪器简单，我们已在有效时基放大760，000倍的示波器上检测了溶液中亚皮秒到纳秒激发分子过程和半导体多量子威尔斯阱中激子弛豫过程的时间演化。快速采集的时间配置文件和易于波长扫描允许编译的时间分辨的吸收和激发光谱。讨论了用同步辐射代替飞秒激光作为光源的可能性。

项目成果

S. Acachi, Y. Takagi, J. Takeda, K. A. Nelson: "Optical sampling four-wave mixing experiment for exciton relaxation processes"Opt. Commun.. 174. 291-298 (2000)

S. Acachi、Y. Takagi、J. Takeda、K. A. Nelson：“激子弛豫过程的光学采样四波混合实验”Opt。

Y.Takagi,and S.Adachi: "Subpicosecond optical sampling spectrometer using asynchronous tunable mode-locked lasers" Rev.Sci.Instrum.70-5(in print). (1999)

Y.Takagi 和 S.Adachi：“使用异步可调谐锁模激光器的亚皮秒光学采样光谱仪”Rev.Sci.Instrum.70-5（印刷中）。

高木芳弘: "非線形分光 「光と化学の事典」"丸善 (出版予定). (2000)

高木义弘：“非线性光谱‘光与化学百科全书’”丸善（即将出版）（2000 年）。

Y.Takagi,and S.Adachi: "Subpicosecond optical sampling spectrometer using asynchronous tunable mode-locked lasers"Rev.Sci.Instrum.. vol.70-5. 2218-2224 (1999)

Y.Takagi 和 S.Adachi：“使用异步可调谐锁模激光器的亚皮秒光学采样光谱仪”Rev.Sci.Instrum.. vol.70-5。

S.Adachi,Y.Takagi,J.Takeda,K.A.Nelson: "Optical sampling four-wave-mixing experiment for ex citon relaxation"Opt.Commun.. Vol.174. 291-298 (2000)

S.Adachi、Y.Takagi、J.Takeda、K.A.Nelson：“激子弛豫的光学采样四波混合实验”Opt.Commun.. Vol.174。