Pavel D. Terekhov,1,2,3 Michael Povolotskyi,3 Zhaxylyk Kudyshev,3 Samuel Peana,3 Shaimaa Azzam,3 Alexander Shalin,1 Alina Karabchevsky,2 Alexander Kildishevhttps://orcid.org/0000-0002-8382-8422,3 Vladimir Shalaev,3 Alexandra Boltasseva3
1ITMO Univ. (Russian Federation) 2Ben-Gurion Univ. of the Negev (Israel) 3Purdue Univ. (United States)
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Bound states in the continuum (BIC) attracted great attention in the photonics community. The existence of such states has led to numerous applications, including optical sensors and filters. Here we report on the approach to externally tune a magnitude and spectral position of high-Q resonances, associated with not symmetry-protected BIC state in silicon nitride (Si3N4) photonic crystals. We show that BIC properties can be controlled by the external thermal impact. These results can be used to construct compact and thermally stable optical sensors immune to harsh environmental conditions.
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Pavel D. Terekhov, Michael Povolotskyi, Zhaxylyk Kudyshev, Samuel Peana, Shaimaa Azzam, Alexander Shalin, Alina Karabchevsky, Alexander Kildishev, Vladimir Shalaev, Alexandra Boltasseva, "Thermally controlled bound states in the continuum in Si3N4 photonic crystals," Proc. SPIE 11460, Metamaterials, Metadevices, and Metasystems 2020, 1146015 (20 August 2020); https://doi.org/10.1117/12.2568229