Hybrid Metasurfaces Enabling Focused Tunable Amplified Photoluminescence Through Dual Bound States in the Continuum DOI
Omar A. M. Abdelraouf, Mengfei Wu, Hong Liu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

Abstract Miniaturized, tunable light sources are essential for integrated photonic devices in quantum computing, communications, and sensing. However, achieving emission post‐fabrication remains challenging, especially efficient amplification. Hybrid metasurfaces that combine multiple nanostructured materials offer a promising solution, enabling enhanced control amplification of emission. Here, amplified photoluminescence (PL) is demonstrated nanocrystalline silicon (nc‐Si) dots (QDs) embedded hybrid metasurface amorphous (a‐Si) antimony trisulfide (Sb2S3), low‐loss phase change material (PCM). The nc‐Si QDs exhibit stable, PL at high temperatures, while the PCM enables transitions. supports dual quasi‐bound states continuum (BICs), Q‐factors up to 225 amplifying by factor 15 with wavelength shift 105 nm via dimensional modulation. Additionally, all‐optical tunability across 24 range attained through Furthermore, Q‐factor metalens proposed focus PL, extending focused into near‐infrared (NIR). This work advances reconfigurable nanophotonic systems.

Language: Английский

Hybrid Metasurfaces Enabling Focused Tunable Amplified Photoluminescence Through Dual Bound States in the Continuum DOI
Omar A. M. Abdelraouf, Mengfei Wu, Hong Liu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

Abstract Miniaturized, tunable light sources are essential for integrated photonic devices in quantum computing, communications, and sensing. However, achieving emission post‐fabrication remains challenging, especially efficient amplification. Hybrid metasurfaces that combine multiple nanostructured materials offer a promising solution, enabling enhanced control amplification of emission. Here, amplified photoluminescence (PL) is demonstrated nanocrystalline silicon (nc‐Si) dots (QDs) embedded hybrid metasurface amorphous (a‐Si) antimony trisulfide (Sb2S3), low‐loss phase change material (PCM). The nc‐Si QDs exhibit stable, PL at high temperatures, while the PCM enables transitions. supports dual quasi‐bound states continuum (BICs), Q‐factors up to 225 amplifying by factor 15 with wavelength shift 105 nm via dimensional modulation. Additionally, all‐optical tunability across 24 range attained through Furthermore, Q‐factor metalens proposed focus PL, extending focused into near‐infrared (NIR). This work advances reconfigurable nanophotonic systems.

Language: Английский

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