Theory of the high-gain optical klystron.
Theory of the high-gain optical klystron.
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DOI：
10.1103/physreva.45.4091
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发表时间：
1992-03
期刊：
影响因子：
--
通讯作者：
Bonifácio;Corsini;Pierini
中科院分区：
文献类型：
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作者：
Bonifácio;Corsini;Pierini
给出了工作在高增益指数区的自由电子激光(FEL)光学速调管色散部分产生的谐波聚束的解析表达式。该模型允许评估这种器件相对于常规FEL配置的操作约束和限制、可能的优化和优点，即缩短总长度和减少诱导能量扩散，前提是初始能量扩散小于正常高增益FEL操作器所需的能量扩散。自由电子激光全非线性方程组的数值解证实了本文推导出的解析表达式。
We present an analytic expression of the harmonic bunching produced by the dispersive section of a free-electron laser (FEL) optical klystron operating in the high-gain exponential regime. This model allows the evaluation of the operating constraints and limits, the possible optimizations and advantages of such a device with respect to the conventional FEL configuration, i.e., shortening of the overall length and reduction of the induced energy spread, provided that the initial energy spread is smaller than the one required for the normal high-gain FEL operator. The analytical expressions derived here are confirmed by the numerical solution of the full nonlinear set of equations for the FEL.