摘要
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 continuouswave 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.
