Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Gyeong Cheol Park"'
Autor:
Gyeong Cheol Park, Kwangwook Park
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
Abstract Perfect absorption at a resonance wavelength and extremely low absorption at the wavelength range of off-resonance in a one-port optical cavity is required for refractive index (RI) sensing with high signal contrast. Here, we propose and ana
Externí odkaz:
https://doaj.org/article/2761041af9d34f66997de7fb23147620
Grating – Resonance InGaAs Narrowband Photodetector for Multispectral Detection in NIR – SWIR Region
Autor:
Junho Jang, Joonsup Shim, Jinha Lim, Gyeong Cheol Park, Jongmin Kim, Dae-Myeong Geum, SangHyeon Kim
Publikováno v:
2022 International Electron Devices Meeting (IEDM).
Autor:
Hannah F Y Watson, Camilla Coletti, Ilya Goykhman, Vito Sorianello, Vaidotas Miseikis, Gyeong Cheol Park, Marco Romagnoli, Shahab Akhavan, Andrea Tomadin, Michele Midrio, J. Wang, Alfonso Ruocco, Andrea C. Ferrari, Marco A. Giambra, Jakob E. Muench, Dengke Zhang
Publikováno v:
Nano Letters
We present a micrometer-scale, on-chip integrated, plasmonic enhanced graphene photodetector (GPD) for telecom wavelengths operating at zero dark current. The GPD is designed to directly generate a photovoltage by the photothermoelectric effect. It i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06231b522ab246e1c6ed7e867fce0e22
Publikováno v:
Optics Express. 31:18240
Wavelength tunable lasers with narrow dynamic linewidths are essential in many applications, such as optical coherence tomography and LiDAR. In this letter, we present a 2D mirror design that provides large optical bandwidth and high reflection while
Autor:
Gyeong Cheol Park, Kwangwook Park
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-10 (2020)
Scientific Reports
Park, G C & Park, K 2020, ' Dual-guiding-layer resonance structure with an embedded metasurface for quasi-critical coupling without a perfect mirror ', Scientific Reports, vol. 10, no. 1, 16014 . https://doi.org/10.1038/s41598-020-72983-8
Scientific Reports
Park, G C & Park, K 2020, ' Dual-guiding-layer resonance structure with an embedded metasurface for quasi-critical coupling without a perfect mirror ', Scientific Reports, vol. 10, no. 1, 16014 . https://doi.org/10.1038/s41598-020-72983-8
We propose an all-dielectric quasi-one-port resonance structure that achieves near perfect absorption without the use of a back mirror. The structure mainly consists of a high-refractive-index silicon metasurface and surrounding high-refractive-index
Autor:
Kwangwook Park, Jung-Wook Min, Sergei Lopatin, Bambar Davaasuren, Boon S. Ooi, Hyeongmun Kim, Sang-Youp Yim, Gyeong Cheol Park, Chul Kang
Publikováno v:
SSRN Electronic Journal.
Autor:
Kwangwook Park, Jung-Wook Min, Sergei Lopatin, Bambar Davaasuren, Tae-Yong Park, Boon S. Ooi, Hyeongmun Kim, Sang-Youp Yim, Gyeong Cheol Park, Chul Kang
Publikováno v:
Applied Surface Science. 608:155020
Autor:
Masoud Payandeh, Soren Engelberth Hansen, Ole Hansen, Hitesh Kumar Sahoo, Kresten Yvind, Arnhold Simonsen, Elizaveta Semenova, Andrey Marchevsky, Gyeong Cheol Park
Publikováno v:
2021 27th International Semiconductor Laser Conference (ISLC).
Publikováno v:
Optics Express. 30:22247
We propose an active optical Fano switch (OFS) based on an embedded dielectric metasurface (EDM) including dual-layer graphene (DLG). An EDM is a dielectric grating overlapped by two cladding layers, and it excites a Fano resonance. DLG is positioned
Autor:
Gyeong Cheol Park, Kwangwook Park
Publikováno v:
Park, G C & Park, K 2021, ' Tunable dual-wavelength absorption switch with graphene based on an asymmetric guided-mode resonance structure ', Optics Express, vol. 29, no. 5, pp. 7307-7320 . https://doi.org/10.1364/OE.416394
We propose a tunable dual-wavelength absorption (TDWA) switch based on an asymmetric guided mode resonance (AGMR) structure. A TDWA switch consists of a graphene layer and an AGMR structure sandwiched by cap and slab layers on a buffer/silicon substr