自由电子激光振荡器中电子束能量跳跃对增益的影响  

THE EFFECT OF THE ELECTRON BEAM ENERGY JITTER ON GAIN IN FEL OSCILLATOR

作　　者：姜云卿 束小建 

机构地区：[1]国家863计划强辐射实验室第五研究室应用物理与计算数学研究所,北京8009信箱100088

出　　处：《强激光与粒子束》1999年第4期389-392,共4页High Power Laser and Particle Beams

基　　金：国家863 激光技术领域资助课题

摘　　要：微脉冲中电子束能量、电流的跳跃会影响电子束的质量， 从而也影响激光的增益。在 Ｃ Ａ Ｅ Ｐ Ｆ Ｉ Ｒ Ｆ Ｅ Ｌ 理论设计模型参数的基础上，利用一维定态程序对电子束能量跳跃对增益的影响进行了数值研究，并与非定态程序计算结果进行比较，给出可容许的能量跳跃范围。The FEL oscillators with high power, high efficiency require stable electron beam as a pump. That means energy, current and period of e beam should stabilize pass by pass during a macropulse. Actually, it is impossible to keep an absolute stabilization of electron beam during a micropulse. The jitter of e beam will affect gain of laser seriously. The effects of energy jitter of e beam on the gain are studied using the FEL 1D code (W1D) developed by us based on the parameters of the CAEP FIR FEL. The results show that the energy jitter should be less than 0.5% for CAEP FIR FEL.

关 键 词：自由电子激光振荡器 能量跳跃 激光增益 激光功率 

分 类 号：TN248.6[电子电信—物理电子学]