Broadband and Ultra-Low Threshold Optical Bistability in Guided-Mode Resonance Grating Nanostructures of Quasi-Bound States in the Continuum

We model optical bistability in all-dielectric guide-mode resonance grating (GMR) nanostructures working at quasi-bound states in the continuum (BICs). The complementary metal-oxide-semiconductor (CMOS) compatible material silicon nitride (SiN) is used for the design of nanostructures and simulation...

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Autores principales:	Xin Li, Zhongshuai Zhang, Yanyan Huo, Lina Zhao, Qingyang Yue, Shouzhen Jiang, Huawei Liang, Yuanmei Gao, Tingyin Ning
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	bound states in the continuum optical bistability guide-mode resonance grating Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/25f9cb49dbda4748b4ad5fa465cca1a0
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spelling	oai:doaj.org-article:25f9cb49dbda4748b4ad5fa465cca1a02021-11-25T18:30:16ZBroadband and Ultra-Low Threshold Optical Bistability in Guided-Mode Resonance Grating Nanostructures of Quasi-Bound States in the Continuum10.3390/nano111128432079-4991https://doaj.org/article/25f9cb49dbda4748b4ad5fa465cca1a02021-10-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/2843https://doaj.org/toc/2079-4991We model optical bistability in all-dielectric guide-mode resonance grating (GMR) nanostructures working at quasi-bound states in the continuum (BICs). The complementary metal-oxide-semiconductor (CMOS) compatible material silicon nitride (SiN) is used for the design of nanostructures and simulations. The ultra-low threshold of input intensity in the feasible nanostructure for nanofabrication is obtained at the level of ~100 W/cm<sup>2</sup> driven by quasi-BICs. Additionally, the resonance wavelength in the GMR nanostructure can be widely tuned by incident angles with the slightly changed <i>Q</i>-factor that enables the optical bistable devices to work efficiently over a wide spectrum. The impact of the defects of grating that may be introduced in the fabrication process on the optical properties is discussed, and the tolerance of the defects to the optical performance of the device is confirmed. The results indicate that the GMR nanostructures of broadband and ultra-low threshold optical bistability driven by quasi-BICs are promising in the application of all-optical devices.Xin LiZhongshuai ZhangYanyan HuoLina ZhaoQingyang YueShouzhen JiangHuawei LiangYuanmei GaoTingyin NingMDPI AGarticlebound states in the continuumoptical bistabilityguide-mode resonance gratingChemistryQD1-999ENNanomaterials, Vol 11, Iss 2843, p 2843 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	bound states in the continuum optical bistability guide-mode resonance grating Chemistry QD1-999
spellingShingle	bound states in the continuum optical bistability guide-mode resonance grating Chemistry QD1-999 Xin Li Zhongshuai Zhang Yanyan Huo Lina Zhao Qingyang Yue Shouzhen Jiang Huawei Liang Yuanmei Gao Tingyin Ning Broadband and Ultra-Low Threshold Optical Bistability in Guided-Mode Resonance Grating Nanostructures of Quasi-Bound States in the Continuum
description	We model optical bistability in all-dielectric guide-mode resonance grating (GMR) nanostructures working at quasi-bound states in the continuum (BICs). The complementary metal-oxide-semiconductor (CMOS) compatible material silicon nitride (SiN) is used for the design of nanostructures and simulations. The ultra-low threshold of input intensity in the feasible nanostructure for nanofabrication is obtained at the level of ~100 W/cm<sup>2</sup> driven by quasi-BICs. Additionally, the resonance wavelength in the GMR nanostructure can be widely tuned by incident angles with the slightly changed <i>Q</i>-factor that enables the optical bistable devices to work efficiently over a wide spectrum. The impact of the defects of grating that may be introduced in the fabrication process on the optical properties is discussed, and the tolerance of the defects to the optical performance of the device is confirmed. The results indicate that the GMR nanostructures of broadband and ultra-low threshold optical bistability driven by quasi-BICs are promising in the application of all-optical devices.
format	article
author	Xin Li Zhongshuai Zhang Yanyan Huo Lina Zhao Qingyang Yue Shouzhen Jiang Huawei Liang Yuanmei Gao Tingyin Ning
author_facet	Xin Li Zhongshuai Zhang Yanyan Huo Lina Zhao Qingyang Yue Shouzhen Jiang Huawei Liang Yuanmei Gao Tingyin Ning
author_sort	Xin Li
title	Broadband and Ultra-Low Threshold Optical Bistability in Guided-Mode Resonance Grating Nanostructures of Quasi-Bound States in the Continuum
title_short	Broadband and Ultra-Low Threshold Optical Bistability in Guided-Mode Resonance Grating Nanostructures of Quasi-Bound States in the Continuum
title_full	Broadband and Ultra-Low Threshold Optical Bistability in Guided-Mode Resonance Grating Nanostructures of Quasi-Bound States in the Continuum
title_fullStr	Broadband and Ultra-Low Threshold Optical Bistability in Guided-Mode Resonance Grating Nanostructures of Quasi-Bound States in the Continuum
title_full_unstemmed	Broadband and Ultra-Low Threshold Optical Bistability in Guided-Mode Resonance Grating Nanostructures of Quasi-Bound States in the Continuum
title_sort	broadband and ultra-low threshold optical bistability in guided-mode resonance grating nanostructures of quasi-bound states in the continuum
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/25f9cb49dbda4748b4ad5fa465cca1a0
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Broadband and Ultra-Low Threshold Optical Bistability in Guided-Mode Resonance Grating Nanostructures of Quasi-Bound States in the Continuum

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