Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Joonhyuk Hwang"'
Autor:
Seong Cheol Lee, Soobong Park, Daewon Suk, Joonhyuk Hwang, Kiyoung Ko, Won Bae Cho, Duk-Yong Choi, Kwang-Hoon Ko, Fabian Rotermund, Hansuek Lee
Publikováno v:
APL Photonics, Vol 9, Iss 8, Pp 080802-080802-7 (2024)
The mid-infrared wavelength region is one of the most important spectral ranges for a variety of applications in monitoring and controlling molecules due to the presence of strong characteristic absorption modes of many molecules. Among various mid-i
Externí odkaz:
https://doaj.org/article/c7216703adf846a987d46eed6e7957b7
Autor:
Dae-Gon Kim, Sangyoon Han, Joonhyuk Hwang, In Hwan Do, Dongin Jeong, Ji-Hun Lim, Yong-Hoon Lee, Muhan Choi, Yong-Hee Lee, Duk-Yong Choi, Hansuek Lee
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020)
High-Q resonators are used to enhance nonlinear phenomena in photonics, but developing a fabrication process to shape a new material into a resonator is challenging and costly. Here, the authors present a method using vapour deposition on pre-pattern
Externí odkaz:
https://doaj.org/article/76f1bd15ccf242189bae6105a90783d6
Publikováno v:
2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
Supercontinuum generation (SCG) is an attractive method to generate broadband optical sources in that it covers more than hundreds of nm bandwidths. In virtue of the advances in nanoscale designs of the nonlinear waveguides, their spectral coverages
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09519aa6336ffa0c5e7bf1e2a273efa8
https://doi.org/10.1109/cleo/europe-eqec52157.2021.9592668
https://doi.org/10.1109/cleo/europe-eqec52157.2021.9592668
Autor:
Joonhyuk, Hwang, Dae-Gon, Kim, Sangyoon, Han, Dongin, Jeong, Yong-Hee, Lee, Duk-Yong, Choi, Hansuek, Lee
Publikováno v:
Optics letters. 46(10)
We report a supercontinuum generation (SCG) in a waveguide that spontaneously forms without an etching process during the deposition of a core material on a preformed ${\rm{Si}}{{\rm{O}}_2}$ substructure. The mechanism of dispersion control for this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::0e8e15596bd0caca8364b12da19dabe9
https://pubmed.ncbi.nlm.nih.gov/33988597
https://pubmed.ncbi.nlm.nih.gov/33988597
Autor:
Dae-Gon Kim, In Hwan Do, Yong-Hee Lee, Dongin Jeong, Sangyoon Han, Joonhyuk Hwang, Duk-Yong Choi, Hansuek Lee
Publikováno v:
Laser Resonators, Microresonators, and Beam Control XXII.
We present a new device platform which defines on-chip chalcogenide waveguide/resonators without directly etching chalcogenide. Using our platform, we have demonstrated chalcogenide ring resonators with record high Q-factor exceeding 1.1x107 which is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07dcb0070720454ae8d9b48e48be7e43
https://doi.org/10.1117/12.2544063
https://doi.org/10.1117/12.2544063
Autor:
Kiyoung Ko, Do-Hyeong Kim, Duk-Yong Choi, Sangyoon Han, Hansuek Lee, Dae-Gon Kim, Joonhyuk Hwang, Yong-Hee Lee
Publikováno v:
14th Pacific Rim Conference on Lasers and Electro-Optics (CLEO PR 2020).
We show a two-point resonator-waveguide coupling method which allows optimizing coupling independently at distinct wavelengths. An intuitive equation is provided to predict the coupling behavior of the method and the equation is verified by experimen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a04d47bffe67d6bdbdec36852c8a272d
https://doi.org/10.1364/cleopr.2020.c3c_5
https://doi.org/10.1364/cleopr.2020.c3c_5
Autor:
Sangyoon Han, Dae-Gon Kim, Yong-Hee Lee, Joonhyuk Hwang, Dongin Jeong, Duk-Yong Choi, Hansuek Lee
Publikováno v:
14th Pacific Rim Conference on Lasers and Electro-Optics (CLEO PR 2020).
We report octave-spanning supercontinuum generation in etch-less As2S3 film waveguide platform. The spectrum is extended from 1.05 to 2.71 μm pumped by 45 pJ pulse energy at 1.56 μm telecommunication wavelength. © 2020 The Author(s)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e49b825d1fe4163b7b30ee2cc7f655d9
https://doi.org/10.1364/cleopr.2020.c8b_2
https://doi.org/10.1364/cleopr.2020.c8b_2
Autor:
Duk-Yong Choi, Sangyoon Han, Yong-Hee Dee, Hansuek Lee, Dae-Gon Kim, Dongin Jeong, Joonhyuk Hwang, In Hwan Do
Publikováno v:
2019 International Conference on Optical MEMS and Nanophotonics (OMN).
We have experimentally demonstrated on-chip chalcogenide resonators with Q-factor of 1.1x107 using a new fabrication method which avoids direct etching of chalcogenide film. Low threshold power (12mW) Brillouin laser is implemented using the fabricat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::414c49d9c73f7ee7a6e7375f28c0fa62
https://doi.org/10.1109/omn.2019.8925242
https://doi.org/10.1109/omn.2019.8925242
Autor:
Sangyoon Han, Dae-Gon Kim, Joonhyuk Hwang, In Hwan Do, Dongin Jeong, Yong-Hee Lee, Duk-Yong Choi, Hansuek Lee
Publikováno v:
Conference on Lasers and Electro-Optics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eeda7fbe9fac2cafa0f6f0b401bc8185
https://doi.org/10.1364/cleo_si.2019.sm4o.2
https://doi.org/10.1364/cleo_si.2019.sm4o.2
Autor:
Hansuek Lee, Dae-Gon Kim, Duk-Yong Choi, Joonhyuk Hwang, Sangyoon Han, Yong-Hee Lee, Dongin Jeong
Publikováno v:
Optics Letters. 46:2413
We report a supercontinuum generation (SCG) in a waveguide that spontaneously forms without an etching process during the deposition of a core material on a preformed S i O 2 substructure. The mechanism of dispersion control for this new, to the best
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3152897503a72348c4dacaf17c3a0ec
https://doi.org/10.1364/ol.422606
https://doi.org/10.1364/ol.422606