Timing control of an intense picosecond pulse laser to the SPring-8 synchrotron radiation pulses
Timing control of an intense picosecond pulse laser to the SPring-8 synchrotron radiation pulses
复制标题
强皮秒脉冲激光器对 SPring-8 同步加速器辐射脉冲的定时控制
DOI：
10.1063/1.1150452
复制
发表时间：
2000
影响因子：
1.6
通讯作者：
T. Ishikawa
中科院分区：
文献类型：
--
作者：
Yoshihito Tanaka;T. Hara;H. Kitamura;T. Ishikawa
我们已经开发了一个控制系统，以同步强皮秒激光脉冲的硬X射线同步辐射（SR）脉冲的SPring-8。一个再生放大锁模钛宝石激光器同步到40 ps SR脉冲锁定激光器的射频环。脉冲的同步通过在条纹相机的金光阴极上同时检测两个光束来监测。这种方法使我们能够精确测量光束之间的时间间隔，即使条纹相机的触发漂移。激光和SR脉冲之间的同步已达到±2 ps的精度，持续数小时。 稳定的定时控制确保了进行双光子激发和泵浦探测实验的可能性，其时间分辨率为几十ps（受SR的脉冲持续时间的限制）。我们已经使用这个系统来表明，在存储环中关闭波荡器间隙改变SR脉冲的到达时间，与预期的结果雅阁。
We have developed a control system to synchronize intense picosecond laser pulses to the hard x-ray synchrotron radiation (SR) pulses of SPring-8. A regeneratively amplified mode-locked Ti:sapphire laser is synchronized to 40 ps SR pulses by locking the laser to the radio frequency of the ring. The synchronization of the pulses is monitored by detecting both beams simultaneously on a gold photocathode of a streak camera. This method enabled us to make a precise measurement of the time interval between the beams, even if the trigger of the streak camera drifts. Synchronization between the laser and the SR pulses has been achieved with a precision of ±2 ps for some hours. The stable timing control ensures the possibility of making two-photon excitation and pump–probe experiments with time resolution of a few tens of ps (limited by the pulse duration of the SR). We have used this system to show that closing undulator gaps in the storage ring shifts the arrival time of the SR pulses, in accord with expectatio...