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基于几何光学理论和矢量绕射理论,研究了将回旋管及其他高功率微波器件的振荡输出模式转换成准光高斯波束的模式变换器,采用伏拉索夫(Vlasov)辐射器和三级准光反射面实现了准高斯模TEM00的横向输出.研究了Vlasov辐射器的工作机理,运用矢量绕射理论计算出波导辐射场,口面电流分布的方法计算反射面辐射场.通过编写程序设计了将94GHz,模式为TE62的毫米波转化为准光高斯波束的内置式准光模式变换器.
Based on the theory of geometrical optics and the vector diffraction theory, the mode converter which converts the oscillation output mode of the gyrotron and other high power microwave devices into a quasi-optical Gaussian beam is studied. Vlasov radiators and three-level quasi- The light reflecting surface realizes the transversal output of the quasi-Gaussian mode TEM00.The working mechanism of the Vlasov radiator is studied and the radiation field of the reflecting surface is calculated by using the vector diffraction theory to calculate the radiation field of the reflecting surface.After programming, A built-in quasi-optical mode converter that converts a 94GHz, mode-TE62 millimeter wave into a quasi-optical Gaussian beam.