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：

---

亚波长厚超高Q太赫兹圆盘微谐振器

具有窄共振特征的人造结构是无数科学进步和技术的关键。特别是，太赫兹 (THz) 频谱——电磁频谱的最后前沿——的探索将极大地受益于高质量的共振结构。在这里，我们提出了一种具有亚波长厚度的太赫兹硅圆盘微谐振器的新范例。利用连续波太赫兹光谱的实验结果在 0.6 太赫兹频率下建立了超过 120,000 的品质因数。将圆盘厚度减少到波长的一小部分可以减少硅衬底的损耗，并为在太赫兹频率范围内实现光-物质相互作用的无与伦比的可能性铺平道路。