Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Jinhyeok Ryu"'
Publikováno v:
Physical review letters. 129(7)
An experimental verification of an exceptional point (EP) in a stand-alone chaotic microcavity is a tough issue because as deformation parameters are fixed the traditional frequency analysis methods cannot be applied any more. Through numerical inves
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7924429b4be6644a13b15be027f48bf
https://pubmed.ncbi.nlm.nih.gov/36018704
https://pubmed.ncbi.nlm.nih.gov/36018704
Publikováno v:
Optics Express. 31:12634
We study a systematic formation of continuous exceptional points (EPs) in a fully-asymmetric optical microdisk. A parametric generation of chiral EP modes is investigated by analyzing asymmetricity-dependent coupling elements in an effective Hamilton
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca18b00573b6aa8491d06dd59c8d1c7c
https://doi.org/10.1364/oe.484812
https://doi.org/10.1364/oe.484812
Publikováno v:
Optics letters. 46(12)
A formation of second-order non-Hermitian degeneracies, called exceptional points (EPs), in a chaotic oval-shaped dielectric microdisk is studied. Different symmetric optical modes localized on a stable period-3 orbit coalesce to form chiral EPs. Unl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f60accc29d516e6ce2a87ed2b85bcbe
https://pubmed.ncbi.nlm.nih.gov/34129589
https://pubmed.ncbi.nlm.nih.gov/34129589
Autor:
Hyeon-Hye Yu, Ji-Hwan Kim, Ji-Won Lee, Jinhyeok Ryu, Chang-Hwan Yi, Jaewon Kim, Sung Bum Kang, Chil-Min Kim, Kyoung Jin Choi
Publikováno v:
Optics express. 28(16)
Plenty of issues on quantal features in chaotic systems have been raised since chaos was accepted as one of the intrinsic properties of nature. Through intensive studies, it was revealed that resonance spectra in chaotic systems exhibit complicated s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f35e2db5b91c4a329e7fde27f3b9a967
https://pubmed.ncbi.nlm.nih.gov/32752351
https://pubmed.ncbi.nlm.nih.gov/32752351
Autor:
Hyundong Kim, Hyeon-Hye Yu, Kwang-Ryong Oh, Ji-Won Lee, Jinhyeok Ryu, In-Goo Lee, Chil-Min Kim, Chang-Hwan Yi, Sunjae Gwak
Publikováno v:
Optics express. 28(13)
The lowest threshold lasing mode in a rounded D-shape microcavity is theoretically analyzed and experimentally demonstrated. To identify the lowest threshold lasing mode, we investigate threshold conditions of different periodic orbits by considering
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::414687e928921d551dfd035fb9f275ff
https://pubmed.ncbi.nlm.nih.gov/32672218
https://pubmed.ncbi.nlm.nih.gov/32672218
Autor:
Jinhyeok Ryu, Chang-Hwan Yi, Ji-Won Lee, Kwang-Ryong Oh, In-Goo Lee, Sunjae Gwak, Chil-Min Kim
Publikováno v:
Optics letters. 45(13)
We study a lasing of mode groups in a fully chaotic rounded D-shape InGaAsP semiconductor microcavity laser when an electrode is smaller than a cavity (inward gap). Although there are numerous unstable periodic orbits supporting resonances, a mode gr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61396a7dbe5f5c9c43cd39618c7878d5
https://pubmed.ncbi.nlm.nih.gov/32630960
https://pubmed.ncbi.nlm.nih.gov/32630960
Autor:
Hyeon-Hye Yu, Sunjae Gwak, Jinhyeok Ryu, Hyundong Kim, Ji-Hwan Kim, Jung-Wan Ryu, Chil-Min Kim, Chang-Hwan Yi
Publikováno v:
Photonics Research. 10:1232
Understanding inter-site mutual mode interaction in coupled physical systems is essential to comprehend large compound systems, as this local interaction determines the successive multiple inter-site energy transfer efficiencies. In the present study
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fdc42ca4969ac4c8a5704931ad2a283e
https://doi.org/10.1364/prj.449515
https://doi.org/10.1364/prj.449515
Publikováno v:
Optics express. 26(26)
We propose a deformed microcavity laser, where a high-Q mode group emits unidirectionally. The cavity comprises three circular arcs and one linear section. To minimize diffraction effects from the boundary, three circular arcs and one linear section
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33b8d39bb0d304a00aaddcc636da526e
https://pubmed.ncbi.nlm.nih.gov/30650903
https://pubmed.ncbi.nlm.nih.gov/30650903
Autor:
Sunjae Gwak, Chang-Hwan Yi, Ji-Hwan Kim, Ji-Won Lee, Chil-Min Kim, Hyeon-Hye Yu, Jaewon Kim, Jinhyeok Ryu
Publikováno v:
Photonics Research. 7:1473
A large number of different types of second-order non-Hermitian degeneracies called exceptional points (EPs) were found in various physical systems depending on the mechanism of coupling between eigenstates. We show that these EPs can be hybridized t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6245e5aa16ba4716e399e4ebe36d62b4
https://doi.org/10.1364/prj.7.001473
https://doi.org/10.1364/prj.7.001473
Autor:
Chang-Hwan Yi, In-Goo Lee, Jinhyeok Ryu, Sung-Min Go, Kwang Ryung Oh, Sung-Bock Kim, Chil-Min Kim
Publikováno v:
OPTICS EXPRESS(24): 3
We find unidirectional emission in a cardioid-shaped microcavity laser. When a deformation parameter is well adjusted, rays starting around a period-5 unstable periodic orbit emit unidirectionally. To confirm the emission direction, we fabricate a la
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f1f62e3e8050b94b886b1eb4b431f87e
https://pubmed.ncbi.nlm.nih.gov/26906801
https://pubmed.ncbi.nlm.nih.gov/26906801