Mode localization and the Q-factor of a cylindrical microresonator

Optics Letters
M Sumetsky

Abstract

As opposed to the modes in an optical spherical/spheroidal microresonator, the whispering gallery modes in a long cylindrical microresonator are delocalized. Consequently, a circulating light beam that is evanescently coupled into the cylinder and experiences total internal reflection eventually radiates out along the cylinder axis. However, the self-interference of such a beam can produce a resonant mode that is strongly localized along the axial direction. Specifically, the mode characteristic width is (alphabeta)(-1/2), where alpha and beta are the attenuation and propagation constants of the cylinder material. The Q-factor of this mode can be almost as large as the Q-factor of modes in a spheroidal microresonator with the same alpha divided by 2.542.

References

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Feb 28, 2003·Nature·D K ArmaniK J Vahala
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Citations

Jan 23, 2016·Scientific Reports·Ming-Yong YeXiu-Min Lin
Jan 2, 2019·Materials·Andrey K SarychevGrégory Barbillon
Mar 4, 2011·Optics Express·Xining ZhangLimin Tong
Jan 26, 2012·Optics Express·M Sumetsky, J M Fini
Jun 19, 2014·Lab on a Chip·Yang LiuXinliang Zhang
Aug 10, 2017·Optics Express·Andrey LagarkovAndrey K Sarychev
Sep 13, 2019·Optics Express·Zhihai LiuLibo Yuan
Oct 18, 2012·Optics Letters·Vladimir A Bolaños QuiñonesOliver G Schmidt
Sep 15, 2015·Optics Express·Qijing LuLei Xu
Jul 7, 2020·Optics Letters·Haoye QinMing Ding
May 15, 2013·Optics Express·Kristopher J RowlandTanya M Monro
Mar 15, 2016·Advances in Optics and Photonics·Matthew R ForemanFrank Vollmer
Oct 21, 2015·Optics Express·Ming-Yong YeXiu-Min Lin
Jun 16, 2018·Optics Letters·X Roselló-MechóM V Andrés
Dec 3, 2010·Optics Letters·M Sumetsky, Y Dulashko

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