Terahertz emission from Bi2Sr2CaCu2O8+x intrinsic Josephson junction stacks
Terahertz emission from Bi2Sr2CaCu2O8+x intrinsic Josephson junction stacks
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DOI：
10.1063/1.5116660
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发表时间：
2019-11-07
影响因子：
3.2
通讯作者：
Wang, Huabing
中科院分区：
文献类型：
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作者：
Kleiner, Reinhold;Wang, Huabing
频率在太赫兹（THz）范围内的电磁辐射在生物学或医学诊断、高带宽通信、安全和防御、无损评估和其他领域的潜在应用非常有趣。然而，特别是在0.5和1.5太赫兹之间的频率范围内，已经证明很难用强大的相干固态源填充。由高温超导体Bi2Sr2CaCu2O8+delta制成的合适的图案结构可以在这个频率范围内工作，目前最好的器件的输出功率达到100 μ w左右。在本教程中，我们将介绍这类振荡器的基本物理原理以及出现的挑战。我们将解释发电机是如何制造的，哪些测量技术用于表征，以及哪些模型用于描述其动力学。我们还将举例说明在太赫兹成像和太赫兹光谱学领域的潜在应用。由AIP出版社授权出版。
Electromagnetic radiation at frequencies in the terahertz (THz) range is highly interesting for potential applications in biology or medical diagnostics, high-bandwidth communication, security and defence, nondestructive evaluation, and other fields. However, particularly, the frequency range between 0.5 and 1.5 THz has turned out to be difficult to fill with powerful coherent solid-state sources. Suitably patterned structures made of the high critical temperature superconductor Bi2Sr2CaCu2O8+delta can operate in this frequency range, and the best devices presently reach an output power around 100 mu W. In this tutorial, we will give an introduction into the basic physics of this type of oscillator and into the challenges that appear. We will explain how the generators are fabricated, which measurement techniques are used for characterization, and which models are used to describe their dynamics. We will also give some examples demonstrating potential applications in the fields of THz imaging and THz spectroscopy. Published under license by AIP Publishing.