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从理论上分析了无反转自由电子激光器的原理，并提出了一个新的无反转自由电子激光器的实现方案。通过增加两块电子反射镜，使电子受激辐射的几率幅相干叠加，得到的增益两倍于原有的方案。
The principle of non-inverting free-electron laser is theoretically analyzed and a new scheme of non-inverting free-electron laser is proposed. By adding two electron mirrors, the amplitude of electron-stimulated radiation is coherently superimposed, resulting in twice the gain of the original scheme.