公开(公告)号：US4825441A

公开(公告)日：1989-04-25

申请号：US575425

申请日：1984-01-31

申请人： Thomas C. Marshall ,  S. Perry Schlesinger ,  Arthur A. Grossman ,  Shien-Chi Chen

发明人： Thomas C. Marshall ,  S. Perry Schlesinger ,  Arthur A. Grossman ,  Shien-Chi Chen

IPC分类号： H01S3/09 ,  H01S3/00

CPC分类号： H01S3/0903

摘要： A free electron laser (FEL) is described which is used for generating highower radiation in a region of increasing guiding magnetic field before injection into an undulating low magnetic field. It includes an electron beam propagating along a guiding magnetic field B.sub.0 (approximately 10 kilo gauss) inside a hollow metallic tube used as a wave guide. Around the path of the beam, an undulator in the form of a bifilar helical winding or the like produces a periodic magnetic field B.sub.1 (approximately 0.5 to 1.0 kG). The electron motion accordingly has a substantial transverse component and the motion at the cyclotron and undulator frequencies occurs. Due to the energy exchange between the gyrating component of electron motion and an electromagnetic wave already present in the hollow tube, radiation of a calculable frequency is amplified.

摘要翻译： 描述了一种自由电子激光器（FEL），其用于在注入波动低磁场之前在增大引导磁场的区域中产生高功率辐射。 它包括在用作波导的中空金属管内部沿导向磁场B0（大约10千高斯）传播的电子束。 围绕梁的路径，以双螺旋绕组等形式的波动器产生周期性磁场B1（约0.5至1.0kG）。 因此，电子运动具有相当大的横向分量，并且发生在回旋加速器和波动器频率处的运动。 由于电子运动的旋转分量与已经存在于中空管中的电磁波之间的能量交换，可计算频率的辐射被放大。