Prof. Gwanho Yoon Profile

Prof. Gwanho Yoon

at Seoul National Univ of Science and Technology

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Author

Publications (3)

Proceedings Article | 4 October 2023 Presentation

Bandgap engineered low-loss a-Si:H for efficient dielectric metasurfaces at visible frequencies

Younghwan Yang, Gwanho Yoon, Minkyung Kim, Dasol Lee, Junsuk Rho

Proceedings Volume PC12646, PC126460F (2023) https://doi.org/10.1117/12.2672557

KEYWORDS: Dielectrics, Refractive index, Phase measurement, Optical components, Miniaturization, Incident light, Engineering, Chemical vapor deposition, Amorphous silicon

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Proceedings Article | 4 October 2022 Presentation

Suppressing optical losses of hydrogenated amorphous silicon for dielectric metasurfaces working at the visible frequencies, and revealing its structural disorder. (Conference Presentation)

Younghwan Yang, Gwanho Yoon, Sunghak Park, Ki Tae Nam, Junsuk Rho

Proceedings Volume PC12202, PC1220206 (2022) https://doi.org/10.1117/12.2632722

KEYWORDS: Dielectrics, Visible radiation, Amorphous silicon, Refractive index, Plasma enhanced chemical vapor deposition, Titanium dioxide, Silicon, Gallium nitride, Semiconductors, Plasma

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Proceedings Article | 20 August 2020 Poster

Enhanced cross-polarization efficiency of a-Si:H metasurfaces via chemical equilibrium in PE-CVD

Younghwan Yang, Gwanho Yoon, Sunghak Park, Seok Nangung, Ki Tae Nam, Junsuk Rho

Proceedings Volume 11467, 114672F (2020) https://doi.org/10.1117/12.2567588

KEYWORDS: Refractive index, Modulation, Atmospheric plasma, Optical properties, Plasma, Amorphous silicon, Diffraction, Silicon

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