Waveguide-Mode-Enhanced Millimeter-Wave Photomodulators
Waveguide-Mode-Enhanced Millimeter-Wave Photomodulators
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DOI：
10.1103/physrevapplied.17.034001
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发表时间：
2022-03
影响因子：
4.6
通讯作者：
I. Hooper
中科院分区：
文献类型：
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作者：
I. Hooper
在光激发时通过硅晶片的毫米波传输的调制对于现成的低有效电荷载流子寿命晶片通常是非常低效的，通常需要数十千瓦的光激发强度来产生显著的调制。在这里，我们证明，增加光-物质的相互作用的毫米波使用衍射耦合波导模式导致光调制效率的增加大于两个数量级，同时保持开关速度的顺序，裸晶片。
The modulation of millimeter-wave transmission through a silicon wafer upon photoexcitation is typically very inefficient for off-the-shelf low effective charge carrier lifetime wafers, typically requiring tens of kilowatts of photoexciting intensity to generate significant modulation. Here we demonstrate that increasing the light-matter interaction for the millimeter waves using diffractively coupled waveguide modes leads to an increase in photomodulation efficiency of greater than two orders of magnitude, while maintaining the switching speed, of the order of, of the bare wafer.