带光速调管的高增益高次谐波振荡器自由电子激光模拟

Simulation of high gain high harmonics oscillator with optical klystron free electron laser

本文提出一种可产生高增益高次谐波辐射的自由电子激光新结构,将光速调管结构置于振荡器光腔中构成HGHG中的调制器,可以去掉传统HGHG调制器中的种子激光.这种结构可以具有振荡器的高重频、纵向相干和窄带宽等优点.采用GINGER模拟软件对此结构进行详细模拟,在高达12次谐波仍能很好的输出.

A possibility of new structure for high harmonics high gain （HGHG） free electron laser is proposed, in which the structure of the optical klystron is placed in the resonance cavity to form the HGHG modulator. This particular modulator can remove seed laser of the conventional HGHG. Such a scheme will be beneficial to high-repetition-rate, full coherence and narrow bandwidth. Detail simulation by GINGER was given, showing that up to 12 harmonics the output of the oscillator is still very well.