光栅—谐振腔复合结构中的史密斯—帕塞尔辐射（英文）

Smith-Purcell radiation in a grating- resonator composite structure

提出了光栅—谐振腔复合结构.利用光学理论和粒子模拟方法研究了这种光栅—谐振腔复合结构中的史密斯—帕塞尔辐射的输出特性.结果显示:利用这种装置可以产生太赫兹波段的可调谐相干史密斯—帕塞尔辐射.这种光栅—谐振腔复合结构具有下列优点:它可以把一定发射角和任意方位角的史密斯—帕塞尔辐射同相位反馈到电子束,对电子束进行调制.

A grating-resonator composite structure was investigated. The output characteristics of Smith-Purcell radiation in this grating-resonator composite structure were studied by optical theoretic analysis and particle-in-cell simulation method. The results showthat tunable coherent Smith-Purcell radiation at Terahertz wavelengths can be generated by this novel structure. This novel grating-resonator composite structure has the following advantages： it can reflect all radiation with an emission angle and random azimuthal angles which backs onto the electron beam with same phase and cause the electrons to be modulated.