Oversized co-axial and cylindrical surface-wave oscillators with two-dimensional periodical grating (quasi-optical model)
Oversized co-axial and cylindrical surface-wave oscillators with two-dimensional periodical grating (quasi-optical model)
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DOI：
10.1063/1.4794008
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发表时间：
2013-03-14
影响因子：
3.2
通讯作者：
Zaslavsky, V. Yu.
中科院分区：
文献类型：
--
作者：
Ginzburg, N. S.;Malkin, A. M.;Zaslavsky, V. Yu.
在准光学方法中，我们研究了具有二维周期光栅的同轴和柱面表面波振荡器的非线性动力学。这些结构中的电磁场是由沿方位和纵向传播的耦合准光学波束叠加而成的。方位波束的存在使具有不同方位折射率的模式的光谱明显稀薄，从而允许大半径直线空心电子束对其进行选择性激发。(C)2013年美国物理研究所。[http://dx.doi.org/10.1063/1.4794008]
Within the quasi-optical approach, we study nonlinear dynamics of co-axial and cylindrical surface-wave oscillators with two-dimensional periodic gratings. Electromagnetic fields in these structures are formed by a superposition of coupled quasi-optical wave-beams propagating in the azimuthal and longitudinal directions. Presence of the azimuthal wave-beams leads to a substantial spectrum rarefication of the modes with different azimuthal indices thus allowing their selective excitation by a large radius rectilinear hollow electron beam. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4794008]