喇曼自由电子激光振荡器

A Raman Free Electron Laser Oscillator

本文报道喇曼自由电子激光振荡器的研究结果．脉冲加速器电子束能量０．４ＭｅＶ，束流８００Ａ．采用满足布喇格条件的分布反馈谐振腔，取代传统的激光器反射镜．理论上进行了分析和设计，采用正弦形波纹结构选择振荡模式．喇曼自由电子激光振荡器实验表明，输出光谱显著变窄．频率分布半高宽度，超辐射下范围为７．５ｍｍ～９．２ｍｍ，分布腔下范围为８．６ｍｍ～８．９ｍｍ．

A flee electron laser oscillator with distributed feedback cavity (DFC) is developed. The theories and experiments of the Raman free electron laser (400 KeV/800A ) with DFC are Studied. The spectral measurements using a microwave grating spectrometer are presented. The narrowed spectral bandwidth covered range of 8. 6 mm～8. 9 mm with central wavelength at 8 mm and output power enhancement show that oscillation happened.