BSCCO Terahertz Oscillators Controlled With Additional Heaters
BSCCO Terahertz Oscillators Controlled With Additional Heaters
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DOI：
10.1109/tasc.2023.3334198
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发表时间：
2024
影响因子：
1.8
通讯作者：
D. Oikawa;Eric Dorsch;Stefan Guénon;D. Koelle;R. Kleiner
中科院分区：
文献类型：
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作者：
D. Oikawa;Eric Dorsch;Stefan Guénon;D. Koelle;R. Kleiner
基于铜氧化物超导体Bi${2}$Sr${2}$CaCu${2}$O${8+\delta }$（BSCCO）的太赫兹（THz）振荡器经常受到由振荡器中的耗散电流产生的焦耳加热。在存在强加热的情况下，形成振荡器的梅萨结构中的温度是不均匀分布的，并且局部温度可能超过临界温度。在我们的研究中，我们数值研究了BSCCO振荡器的性质，通过使用三维耦合sine-Gordon方程结合热扩散方程。我们建议使用额外的加热元件位于梅萨的边缘均匀化和控制堆栈温度。分析和讨论了加热元件对梅萨结构电磁和热性能的影响。至少在某些情况下，额外的加热器可能有助于提高太赫兹发射功率。
Terahertz (THz) oscillators based on the cuprate superconductor Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+\delta }$ (BSCCO) often suffer from Joule heating produced by the dissipative currents flowing in the oscillator. In the presence of strong heating the temperature in the mesa structure forming the oscillator is non-uniformly distributed, and the local temperature may exceed the critical temperature. In our study we have numerically investigated the properties of the BSCCO oscillators by using 3D coupled sine-Gordon equations combined with the heat-diffusion equations. We propose to use additional heating elements located at the edges of the mesa to homogenize and control the stack temperature. We analyze and discuss the effect of the heating elements on the electromagnetic and thermal properties of the mesa structures. At least in some cases the additional heaters might be helpful for improving the THz emission power.