Short pulse, high power microwave radiation source with a laser-induced sheet plasma mirror
Short pulse, high power microwave radiation source with a laser-induced sheet plasma mirror
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DOI：
10.1063/1.3117522
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发表时间：
2009-05
影响因子：
3.2
通讯作者：
T. Higashiguchi;N. Yugami
中科院分区：
文献类型：
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作者：
T. Higashiguchi;N. Yugami
我们从传统的微波源和微波组件出发，在充气的X波段矩形波导中，利用紫外光诱导的片状等离子体镜，实现了短脉冲、高功率微波辐射源。激光诱导的片状等离子体与密度过高的等离子体起到了等离子镜面的作用。在充气波导中传输的长脉冲被薄片等离子体镜沿波导的两个不同点切割。通过将该方案产生的两个切片微波脉冲相加，我们观察到了大约两倍的脉冲功率。在脉宽为0.8μ的S脉冲源上，观察到最大峰值功率为200kW，脉宽为10 ns(半高全宽)。
We have demonstrated the short pulse, high power microwave radiation source using an ultraviolet laser-induced sheet plasma mirror in a gas-filled x-band rectangular waveguide from the conventional microwave sources and components. A laser-induced sheet plasma with an overdense plasma acts as a plasma mirror. The long pulse propagating in the gas-filled waveguide was sliced by the sheet plasma mirror at two different points along the waveguide. We observed about twice the power of the pulse by adding the two sliced microwave pulses produced by this scheme. A maximum peak power of 200 kW with a pulse duration of 10 ns (full width at half maximum) from the long microwave pulse source with a pulse duration of 0.8 μs was observed.