Terahertz whispering gallery mode bubble resonator

被引：33
|
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：
OPTICA | 2017年 / 4卷 / 07期
关键词：
D O I：
10.1364/OPTICA.4.000809
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Whispering gallery mode (WGM) resonators are compelling optical devices; however, they are nearly unexplored in the terahertz (THz) domain. In this Letter, we report on THz WGMs in quartz glass bubble resonators with a sub-wavelength wall thickness. An unprecedented study of both the amplitude and phase of THz WGMs is presented. The coherent THz frequency domain measurements are in excellent agreement with a simple analytical model and results from numerical simulations. A high finesse of 9 and a quality (Q) factor exceeding 440 at 0.47 THz are observed. Due to the large evanescent field, the high Q-factor THz WGM bubble resonators can be used as a compact, highly sensitive sensor in the intriguing THz frequency range. (C) 2017 Optical Society of America
引用
收藏
页码：809 / 812
页数：4
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