In the high efficiency and small signal region, we investigate theoretically the efficiency enhancement mechanism of far infrared free electron laser (FIR-FEL) with a reverse tapering waveguide.

在高效率和低电流小信号范围内，理论地分析了用反向渐变波导提高远红外波导自由电子激光器(FIR - FEL)效率的机理。

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Influence of untrapped electrons on the sideband instability of electromagnetic Wig-gler free electron laser(EM-FEL)is analyzed in detail with single-particle theory.

用单粒子理论分析了未被有质动力势阱捕获的电子对电磁波泵自由电子激光边带不稳定性的影响。

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To obtain high average current electron beams for high average power Free Electron Laser (FEL), a DC-SC photocathode injector is designed.

为获得用于高平均功率自由电子激光（FEL）的高平均流强电子束，设计了一种新型的DC- SC光阴极注入器，并对其进行了优化设计和束流动力学研究。

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The high average power infrared Free Electron Laser (FEL) provides intense beams of laser light that can be tuned to atmosphere-penetrating wavelengths.

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