Ultra-high Q terahertz whispering-gallery modes in a silicon resonator

被引：53
作者：
Vogt, Dominik Walter [1 ]
Leonhardt, Rainer [1 ]
机构：
[1] Univ Auckland, Dept Phys, Dodd Walls Ctr Photon & Quantum Technol, Private Bag 92019, Auckland 1142, New Zealand
来源：
APL PHOTONICS | 2018年 / 3卷 / 05期
关键词：
TIME-DOMAIN SPECTROSCOPY; OPTICAL RESONATORS; WAVE-GUIDE; MICROSPHERE;
D O I：
10.1063/1.5010364
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report on the first experimental demonstration of terahertz (THz) whispering-gallery modes (WGMs) with an ultra-high quality factor of 1.5 x 10(4) at 0.62 THz. The WGMs are observed in a high resistivity float zone silicon spherical resonator coupled to a sub-wavelength silica waveguide. A detailed analysis of the coherent continuous wave THz spectroscopy measurements combined with a numerical model based on Mie-Debye-Aden-Kerker theory allows us to unambiguously identify the observed higher order radial THz WGMs. (c) 2018 Author(s).
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页数：9
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