公开(公告)号：US4740973A

公开(公告)日：1988-04-26

申请号：US736494

申请日：1985-05-21

申请人： John M. J. Madey ,  David A. G. Deacon ,  Michel Velghe ,  Michel Billardon ,  Yves Petroff ,  Jean-Michel Ortega ,  Pascal Elleaume ,  Claude Bazin ,  Maurice Bergher

发明人： John M. J. Madey ,  David A. G. Deacon ,  Michel Velghe ,  Michel Billardon ,  Yves Petroff ,  Jean-Michel Ortega ,  Pascal Elleaume ,  Claude Bazin ,  Maurice Bergher

IPC分类号： H01S3/09 ,  H01S3/00

CPC分类号： H01S3/0903

摘要： The invention envisages control devices acting on the laser to vary in time the electron/photon interaction, means proceeding to a State I in which they alter the optimal conditions for laser amplification; and a State II in which that reestablish said optimal conditions, which control devices permit the improvement of the peak amplitude and stability of the laser pulses and the rate and stability of the pulse period. According to another aspect of this invention, the two states are alternated, preferably periodically or almost periodically. The duration of State I should be selected by comparison with the characteristics of the electron packet and, in particular of the relaxation time observed for said packet. If the duration of State II is set to a value to be comparable to or longer than the electron relaxation time, the peak amplitude of the laser pulses is increased. The duration of State II should be selected by comparison with the natural macropulse width. If the duration of the State II is set to a value shorter than the natural duration of the laser macropulses, the repetition rate of the laser pulses can be increased.

摘要翻译： 本发明设想作用在激光器上的控制装置在时间上改变电子/光子相互作用，意味着进行到它们改变激光放大的最佳条件的状态I; 以及重新建立最佳条件的状态II，其中控制装置允许提高激光脉冲的峰值振幅和稳定性以及脉冲周期的速率和稳定性。 根据本发明的另一方面，两个状态是交替的，优选地周期性地或几乎周期性地。 应通过与电子分组的特性进行比较来选择状态I的持续时间，特别是对于所述分组观察到的弛豫时间。 如果将状态II的持续时间设定为与电子弛豫时间相当或更长的值，则激光脉冲的峰值振幅增加。 通过与自然宏观脉冲宽度的比较来选择状态二的持续时间。 如果将状态II的持续时间设定为比激光大尺寸的自然持续时间短的值，则可以增加激光脉冲的重复率。