Artificial structures that exhibit narrow resonance features are key to a myriad of scientific advances and technologies. In particular, exploration of the terahertz (THz) spectrum—the final frontier of the electromagnetic spectrum—would greatly benefit from high-quality resonant structures. Here we present a new paradigm of terahertz silicon disc microresonators with subwavelength thickness. Experimental results utilizing continuous-wave THz spectroscopy establish quality factors in excess of 120,000 at 0.6 THz. Reduction of the disc thickness to a fraction of the wavelength reduces the losses from the silicon substrate and paves the way to unparalleled possibilities for light–matter interaction in the THz frequency range.

中文翻译：

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亚波长厚超高Q太赫兹圆盘微谐振器

具有狭窄共振特征的人造结构是无数科学进步和技术的关键。尤其是，太赫兹（THz）频谱（电磁频谱的最终前沿）的探索将极大地受益于高质量的谐振结构。在这里，我们介绍了具有亚波长厚度的太赫兹硅片微谐振器的新范例。利用连续波太赫兹光谱学的实验结果建立了在0.6 THz时超过120,000的品质因数。将光盘厚度减小到波长的一小部分可减少硅衬底的损耗，并为在THz频率范围内光与物质相互作用的无与伦比的可能性铺平了道路。