无纵向电场分量离子波纹激光的小信号增益

Small Signal Gain of Non-longitudinal Electric Field Ion Ripple Lasers

在离子波纹摆动器中,改变电子束的入射方向,保证了离子波纹场的纵向分量为零,从而消除了纵向电场对离子波纹激光的不利影响。给出了束电子的运动轨迹,运用Madey定理计算了小振幅条件下该离子波纹激光的小信号增益。

The harmful influence of longitudinal electric field on an ionripple laser was eliminated by changing the direction of the injected electron beam in ionripple wiggler,ensur that the longitudinal component of the ion-ripple electric field equals zero..The trajectories of the beam electrons were given.Under the condition of small amplitude,the small signal gain of the wiggler is derived by using Madey theorem.