In the high efficiency and small signal region, we investigate theoretically the efficiency enhancement mechanism of far infrared freeelectronlaser (FIR-FEL) with a reverse tapering waveguide.
The Shanghai FreeElectronLaser (SFEL) user facility currently under construction at Shanghai institute of Nuclear Research is a broadband freeelectronlaser (FEL) facility.
上海宽波段自由电子激光用户装置（SFEL）正在中国科学院上海原子核研究所FEL实验室设计建造。
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A coaxial hybrid wiggler free-electronlaser (FEL) amplifier with and without plasma filling is studied by a method of PIC simulation in this paper.