Free-space coupling to symmetric high-Q terahertz whispering-gallery mode resonators

被引：11
|
作者：
Vogt, Dominik Walter [1 ,2 ]
Jones, Angus Harvey [1 ,2 ]
Leonhardt, Rainer [1 ,2 ]
机构：
[1] Univ Auckland, Dept Phys, Auckland 1010, New Zealand
[2] Dodd Walls Ctr Photon & Quantum Technol, Auckland, New Zealand
来源：
OPTICS LETTERS | 2019年 / 44卷 / 09期
关键词：
THZ; RESONANCES; SCATTERER;
D O I：
10.1364/OL.44.002220
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report on the coupling of a free-space Gaussian beam to symmetric high-quality (Q) whispering-gallery mode resonators (WGMRs) for terahertz (THz) radiation. We achieve very high excitation efficiencies up to 50% to THz WGMs with a Q-factor of 1.5 x 10(4) at 0.7 THz. The high coupling efficiencies have been realized by leveraging a Gaussian beam with a nearly diffraction-limited focal spot, as well as readily available low-loss, high-index silicon spheres with diameters comparable to the wavelength. The results convincingly underline the viability of free-space coupling in the THz frequency range. (C) 2019 Optical Society of America
引用
收藏
页码：2220 / 2223
页数：4
相关论文
共 50 条
  • [21] Whispering-gallery mode terahertz pulses
    Zhang, JQ
    Grischkowsky, D
    OPTICS LETTERS, 2002, 27 (08) : 661 - 663
  • [22] Transient Effects in High-Q Whispering Gallery Mode Resonators: Modelling and Applications
    Trebaol, Stephane
    Rasoloniaina, Alphonse
    Dumeige, Yannick
    Feron, Patrice
    2011 13TH INTERNATIONAL CONFERENCE ON TRANSPARENT OPTICAL NETWORKS (ICTON), 2011,
  • [23] Free-space coupling of nanoantennas and whispering-gallery microcavities with narrowed linewidth and enhanced sensitivity
    Gu, Fuxing
    Zhang, Li
    Zhu, Yingbin
    Zeng, Heping
    LASER & PHOTONICS REVIEWS, 2015, 9 (06) : 682 - 688
  • [24] High-Q Factor Optical Whispering-Gallery Mode Microresonators and Their Use in Precision Measurements
    M. L. Gorodetskii
    Yu. A. Demchenko
    D. F. Zaitsev
    V. N. Krutikov
    Yu. M. Zolotarevskii
    V. L. Lyaskovskii
    Measurement Techniques, 2015, 57 : 1386 - 1395
  • [25] High-Q Surface-Plasmon Whispering-Gallery Microcavity
    Min, Bumki
    Ostby, Eric
    Sorger, Volker
    Ulin-Avila, Erick
    Yang, Lan
    Zhang, Xiang
    Vahala, Kerry
    2009 CONFERENCE ON LASERS AND ELECTRO-OPTICS AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (CLEO/QELS 2009), VOLS 1-5, 2009, : 2359 - +
  • [26] High-Q Factor Optical Whispering-Gallery Mode Microresonators and Their Use in Precision Measurements
    Gorodetskii, M. L.
    Demchenko, Yu. A.
    Zaitsev, D. F.
    Krutikov, V. N.
    Zolotarevskii, Yu. M.
    Lyaskovskii, V. L.
    MEASUREMENT TECHNIQUES, 2015, 57 (12) : 1386 - 1395
  • [27] A fully integrated high-Q Whispering-Gallery Wedge Resonator
    Ramiro-Manzano, Fernando
    Prtljaga, Nikola
    Pavesi, Lorenzo
    Pucker, Georg
    Ghulinyan, Mher
    OPTICS EXPRESS, 2012, 20 (20): : 22934 - 22942
  • [28] Whispering-gallery mode quantum resonators in graphene
    Jung, Suyong
    NPG ASIA MATERIALS, 2015, 7 : e218 - e218
  • [29] Whispering-gallery mode quantum resonators in graphene
    Suyong Jung
    NPG Asia Materials, 2015, 7 : e218 - e218
  • [30] Whispering-Gallery Mode Resonators for Detecting Cancer
    Pongruengkiat, Weeratouch
    Pechprasarn, Suejit
    SENSORS, 2017, 17 (09)
12345