Multi-channel bound states in the continuum in coaxial cylindrical waveguide

被引：6
|
作者：
Pilipchuk, A. S. [1 ]
Pilipchuk, A. A. [1 ]
Sadreev, A. F. [1 ]
机构：
[1] Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
来源：
PHYSICA SCRIPTA | 2019年 / 94卷 / 11期
基金：
俄罗斯基础研究基金会;
关键词：
bound states in the continuum; embedded trapped modes; cylindrical resonator; effective Hamiltonian; TRAPPED MODES; ACOUSTIC RESONANCES; PARALLEL PLATES;
D O I：
10.1088/1402-4896/ab1e9b
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Bound states in the continuum (BICs) or embedded trapped modes are widely studied in different physical systems. The studies are restricted to a single open scattering channel. In the present paper we consider BICs embedded into several continua in a cylindrical resonator opened by two coaxially attached cylindrical waveguides with different radii. We demonstrate that engineering the BICs requires a degeneracy of three eigenmodeds of the closed resonator. That is achieved by variation of both the length and the radius of the resonator.
引用
收藏
页数：6
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