【摘要】 在多束激光辐照靶的实验中,时间同步是十分重要的。我们用双光子荧光（TPF）法测量了六束钕玻璃高功率激光系统(6×10¹¹W)的时间同步。测量时间同步的光源是该激光系统中的主被动锁模Nd³⁺∶YAG振荡器,脉宽是20ps。 相对辐照的二束激光的时间同步测量,采用了在靶位处放置一个四面通光的双光子荧光盒,而正交辐照的二束激光的时间同步测量,采用了在靶位处放置一个半透膜板和一个双光子荧光装置。时间同步测量简便、直观。 给出了用双光子荧光法测量时间同步的误差。两束激光相对辐照时,同步误差为4ps,两束激光正交辐照时,同步误差为5ps。六束激光时间同步误差为10ps。更多还原

【Abstract】 In the target experiment by multi-beam irradiation time-synchronization is very important. Using a method of two-photon fluorescence （TPF）, we have measured the time-synchronization of six beams Nd3+ glass high power laser system (6×10¹¹ W). The active-passive mode-locked Nd3+:YAG oscillator of the time-synchronization was used as the light source for the time-synchronization measurement. The pulse width was 20 ps.Time-synchronization for two opposite beams was measured using a TPF cell capable of four beam transmission on the position of target. Time-synchronization for two crossed beams was measured by placing a half-transparent film on the target position and a TPF apparatus. The measurement is simple and perceivable.The error in the measurement of the time-synchronization by two-photon fluorescence is presented. The error is about 4ps for two opposite beams and 5ps for two crossed beams. The total error of the time-synchronization for six beams is about 10 ps.更多还原