给出10μm射频自由电子激光谐振腔的实用设计。按高斯光束分布计算出给定腔长的反射镜曲率半径、光腰及镜面处光斑尺寸等参量。解决了细长波导中辐射和电子束的空间匹配问题,并讨论了时间同步问题。

Practical design of the resonant cavity for a RF free electron laser at 10.6 μm is proposed. For a given cavity length, the parameters, including the curvature of reflector, waist radius and spot size on reflectors, are calculated according to the Gaussian profile. The problem of spatial match between the radiation and the beam in a long narrow waveguide has been solved and the synchronization is discussed.