分析了自由电子激光器中电子与波的相互作用过程，导出了相应的增益表达式。
The interaction process between electrons with electromagnetic waves in the fr-ee electron laser (FEL) is analysed and the corresponding gain expression is derived.
我们对喇曼自由电子激光器输出的辐射信号进行了系统的测试，获得的数据曲线与理论计算结果完全符合。
Systematic measurements of a go out radiation signal from our Raman free-electron laser indicated a good agreement between experimental data and theoretical calculations.
从负能空间电荷波与电磁波耦合的物理图像出发推导了喇曼散射模式自由电子激光器耦合频率的解析表达式。
Analytical expressions of coupling frequencies of Raman free-electron lasers are deduced based on the physical image of the coupling between negative-energy space-charge wave and EM wave.
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