Design and characterization of microstrip patch antennas for high-Tc superconducting terahertz emitters.
Design and characterization of microstrip patch antennas for high-Tc superconducting terahertz emitters.
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DOI：
10.1364/oe.420417
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发表时间：
2021-03
期刊：
影响因子：
3.8
通讯作者：
M. Tsujimoto;Y. Kaneko;G. Kuwano;Kanae Nagayama;T. Imai;Y. Ono;S. Kusunose;T. Kashiwagi;H. Minami;K. Kadowaki;Y. Simsek;U. Welp;W. Kwok
中科院分区：
文献类型：
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作者：
M. Tsujimoto;Y. Kaneko;G. Kuwano;Kanae Nagayama;T. Imai;Y. Ono;S. Kusunose;T. Kashiwagi;H. Minami;K. Kadowaki;Y. Simsek;U. Welp;W. Kwok
我们设计并表征了一种与铜氧化物高温超导太赫兹发射器兼容的平面贴片天线的微带图案。利用电磁仿真器对天线参数进行了优化。我们在0.35-0.85 THz的连续频率范围内观察到在相同的Bi 2Sr 2CaCu 2 O 8 +δ基础晶体上制造的每个梅萨的可重复亚太赫兹发射。虽然没有显着的输出功率增强，在一个固定的频率下观察到低于40 K的平台行为，表明适度的阻抗匹配归因于周围的微带图案。在高达16.9的轴比下的显著各向异性偏振表明锁模效应。我们的研究结果，使构建紧凑组装，单片，广泛可调谐的超导太赫兹源。
We designed and characterized a microstrip pattern of planar patch antennas compatible with a cuprate high-Tc superconducting terahertz emitter. Antenna parameters were optimized using an electromagnetic simulator. We observed repeatable sub-terahertz emissions from each mesa fabricated on identical Bi2Sr2CaCu2O8+δ base crystals in a continuous frequency range of 0.35-0.85 THz. Although there was no significant output power enhancement, a plateau behavior at a fixed frequency was observed below 40 K, indicating moderate impedance matching attributable to the ambient microstrip pattern. A remarkably anisotropic polarization at an axial ratio of up to 16.9 indicates a mode-locking effect. Our results enable constructing compactly assembled, monolithic, and broadly tunable superconducting terahertz sources.