高电子迁移率晶体管光拍频的可调谐等离子体波共振探测
Tunable plasma wave resonant detection of optical beating in high electron mobility transistor
摘要：
报道了利用AlGaAs/InGaAs/InP高电子迁移率晶体管对两束1.55 m连续激光进行等离子体波拍频的可调谐太赫兹共振探测。我们表明，基本的等离子体谐振频率及其奇次谐波可以调谐与所施加的栅极电压在75-490 GHz的范围内。观察到的频率依赖于栅极偏置被发现是在很好的协议与理论等离子体波色散规律。
英文摘要：
We report on tunable terahertz resonant detection of two 1.55 µm cw-lasers beating by plasma waves in AlGaAs/InGaAs/InP high-electron-mobility transistor. We show that the fundamental plasma resonant frequency and its odd harmonics can be tuned with the applied gate-voltage in the range 75-490 GHz. The observed frequency dependence on gate-bias is found to be in good agreement with the theoretical plasma waves dispersion law.
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