backward wave

基本解释

This paper brings forth a new relativistic backward wave oscillator with coaxial extractor.
提出一种新型相对论返波管同轴引出相对论返波管结构。
Third-order susceptibility has been determined by the ratio of the input probing beam in tensity to the backward wave intensity in four-wave mixing.
通过测量后向反射波与入射波的强度比，可以确定介质的三阶极化率。
Backward wave oscillator(BWO) has been used in many mm-wave sources for its advantage of wide band, frequency tunable continuously, and high power output.
返波管振荡器由于具有带宽宽、输出频率连续可调、输出功率较大等优点在毫米波频段的信号源中得到了很多应用。