Terahertz-wave generation using resonant-antenna-integrated uni-traveling-carrier photodiodes
Terahertz-wave generation using resonant-antenna-integrated uni-traveling-carrier photodiodes
复制标题
使用集成谐振天线的单行载流子光电二极管产生太赫兹波
DOI：
10.1117/12.2262764
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
H. Ito and T. Ishibashi
中科院分区：
文献类型：
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作者：
H. Ito and T. Ishibashi
两种类型的谐振天线与单行载流子光电二极管（UTC-PD）集成，以增加太赫兹波输出功率。缝隙天线集成 UTC-PD 在峰值频率下的输出功率是非谐振领结天线集成设备的两到三倍。窄槽 UTC-PD 的输出功率在 900 GHz 至 1.6 THz 的频率范围内得到增强，而宽槽 UTC-PD 的输出功率在 350 GHz 至 850 GHz 的频率范围内得到增强。对于 10 mA 的光电流和 -0.4 V 的偏置电压，检测到的输出功率在 1.25 THz 下为 3.5 μW，在 700 GHz 下为 28 μW。谐振领结天线可以通过简单的分析计算来设计，并且还与 UTC-PD 集成。所制造的器件在峰值频率下的输出功率是非谐振领结天线集成器件的三倍，输出功率增强的频率范围为 400 至 700 GHz。
Two types of resonant antennas were integrated with uni-traveling-carrier photodiodes (UTC-PDs) to increase THz-wave output powers. Slot-antenna integrated UTC-PDs exhibited two to three times larger output powers at their peak frequencies than those of a non-resonant bowtie-antenna-integrated device. Output power was enhanced at frequencies from 900 GHz to 1.6 THz for a narrow-slot UTC-PD and from 350 to 850 GHz for a wide-slot UTC-PD. The detected output power was 3.5 μW at 1.25 THz and 28 μW at 700 GHz for a photocurrent of 10 mA with a bias voltage of -0.4 V. A resonant bowtie-antenna, which can be designed by simple analytical calculation, was also integrated with a UTC-PD. The fabricated device exhibited about three times larger output powers at its peak frequency than those of a non-resonant bowtie-antenna-integrated device with an output-power-enhanced frequency range from 400 to 700 GHz.