Compact supercavity systems with optimized excitation of quasi-BIC resonators (Conference Presentation)

Alexander V. Kildishev; Zahra Manzoor; Michael D. Sinanis; Omer Yesilyurt; Vahagn Mkhitaryan; Dimitrios Peroulis

doi:10.1117/12.2634062

3 October 2022 Compact supercavity systems with optimized excitation of quasi-BIC resonators (Conference Presentation)

Alexander V. Kildishev, Zahra Manzoor, Michael D. Sinanis, Omer Yesilyurt, Vahagn Mkhitaryan, Dimitrios Peroulis

Proceedings Volume PC12195, Metamaterials, Metadevices, and Metasystems 2022; PC1219517 (2022) https://doi.org/10.1117/12.2634062
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States

Abstract

Significant miniaturization of high-Q supercavity systems with planar technology requires novel coupling structures that excite the desired set of resonant modes. We review the physics of bound states in the continuum (BICs) of open, high-index dielectric resonators, excited by new complex sources that enable a controlled interference in the system. We show that, in avoided-crossing regimes associated with quasi-BICs, the controlled retardation of inducing currents can bring up the Q-factors beyond the state-of-the-art levels in optimized, fully-symmetric systems. We illustrate our theory with proof-of-concept experiments in microwaves, comparing high-index dielectric resonators excited by microstrip structures with different mode complexity.

Conference Presentation

Citation Download Citation

Alexander V. Kildishev, Zahra Manzoor, Michael D. Sinanis, Omer Yesilyurt, Vahagn Mkhitaryan, and Dimitrios Peroulis "Compact supercavity systems with optimized excitation of quasi-BIC resonators (Conference Presentation)", Proc. SPIE PC12195, Metamaterials, Metadevices, and Metasystems 2022, PC1219517 (3 October 2022); https://doi.org/10.1117/12.2634062

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