The dynamic velocity taper and induced second harmonic are analyzed which improve the miniature TWT efficiency using computer simulation based on Rowe large signal theory.

本文以罗埃大信号理论为基础，对提高小型化行波管效率的动态速度渐变技术和二次谐波的抑制问题进行了模拟计算分析。

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The optical second harmonic signal was observed using a ND:YAG laser, The mechanism of SHG was discussed.

在Nd：YAG强激光光场的作用下，薄膜样品中观察到二次谐波信号，并分析了二次谐波发生的机理。

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