摘要
工作在超辐射模式下的集体区自由电子激光器的增益特性研究可以通过改变互作用区长度及泵浦强度来进行。我们利用偏转磁场可以获得任意的相互作用区长度。实验结果证明,工作在集体区的自由电子激光的辐射增益随泵浦磁场近似呈1.7次方关系,实验测得的增益系数范围为0.4dB/cm到1.38dB/cm。
The gain characteristics of the collective free electron laser operating in a superradiant amplifier have been studied through the variation of the interaction length and pumping magnetic field. We could obtain arbitrary interaction length by means of an axially movable 'kicker' magnetic field that deflected the electron beam. The experimental results showed that the radiation gain of collective FEL was approximately 1.7th power of the pumping magnetic field with gain ranging from 0.4dB/cm to 1.38dB/cm.
出处
《中国激光》
EI
CAS
CSCD
北大核心
1991年第11期801-805,共5页
Chinese Journal of Lasers
基金
国家自然科学基金资助项目
