波导自由电子激光带能散度非定态增益  

Gain in Non-steady State Waveguide Free Electron Lasers by Taking into Account Energy Spread

作　　者：束小建[1] 

机构地区：[1]北京应用物理与计算数学研究所863

出　　处：《中国激光》1996年第10期888-892,共5页Chinese Journal of Lasers

摘　　要：推导了带能散度的波导自由电子激光高、低两共振频率支的非定态增益解析公式．给出了近似显式公式，与数值模拟结果符合很好。从所得增益脉冲分布．估算了克服呆滞效应所需腔长失谐值，在时空框架内解释了自锁模机制。The analytic expression of gain for both frequencies in non-steady state waveguidefree electron lasers is derived by taking into account axial energy spread of electron beams..The approximate explicit expression is also given. They agree well with numericalsimulations. Based on the non-steady state gain, the necessary detuning of cavity length tocounteract the effect of lethargy is estimated, and the mechanism of self mode--locking isexplained clearly in time domain.

关 键 词：自由电子激光 波导 增益 定态 

分 类 号：TN248.6[电子电信—物理电子学]