Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Symmetry breaking of bound states in the continuum in luminescence response of photonic crystal slabs with embedded Ge nanoislands. / Yurasov, Dmitry; Dyakov , Sergey; Smagin , Ilia и др.
в: Applied Physics Letters, Том 125, № 2, 021105, 08.07.2024.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Symmetry breaking of bound states in the continuum in luminescence response of photonic crystal slabs with embedded Ge nanoislands
AU - Yurasov, Dmitry
AU - Dyakov , Sergey
AU - Smagin , Ilia
AU - Tikhodeev, Sergei
AU - Gippius, Nikolay
AU - Stepikhova, Margarita
AU - Peretokin, Artem
AU - Shaleev, Mikhail
AU - Smagina, Zhanna
AU - Utkin, Dmitry
AU - Novikov, Alexey
PY - 2024/7/8
Y1 - 2024/7/8
N2 - Bound states in the continuum (BIC) have attracted a great deal of attention in all-dielectric nanophotonics due to their ability to provide spectral features with a very high-quality factor. By definition, BIC cannot be observed in the far field because of the symmetry mismatch with the modes propagating in free space. Despite this, in systems with slightly reduced symmetry, the condition for BIC is lifted, which gives rise to the high-quality resonant features in their optical response. In particular, in photonic crystal slabs, which support the BIC states, the symmetry reduction allows modification of light propagation, reflection, or emission. In this work, using the photonic crystal slabs with embedded Ge nanoislands, we have shown the ability to control their light emission features by symmetry breaking. It was demonstrated that such symmetry breaking due to a change in the basis vectors of the photonic crystal unit cell or a change in the unit cell internal structure could provide independent control knobs to alter the spectral position of photonic crystal modes, their dispersion, and degeneracy. The obtained results reveal additional ways to manage the light emission of active media in photonic crystal slabs.
AB - Bound states in the continuum (BIC) have attracted a great deal of attention in all-dielectric nanophotonics due to their ability to provide spectral features with a very high-quality factor. By definition, BIC cannot be observed in the far field because of the symmetry mismatch with the modes propagating in free space. Despite this, in systems with slightly reduced symmetry, the condition for BIC is lifted, which gives rise to the high-quality resonant features in their optical response. In particular, in photonic crystal slabs, which support the BIC states, the symmetry reduction allows modification of light propagation, reflection, or emission. In this work, using the photonic crystal slabs with embedded Ge nanoislands, we have shown the ability to control their light emission features by symmetry breaking. It was demonstrated that such symmetry breaking due to a change in the basis vectors of the photonic crystal unit cell or a change in the unit cell internal structure could provide independent control knobs to alter the spectral position of photonic crystal modes, their dispersion, and degeneracy. The obtained results reveal additional ways to manage the light emission of active media in photonic crystal slabs.
UR - https://elibrary.ru/item.asp?id=68805831
UR - https://www.mendeley.com/catalogue/ac820606-d4c4-3bf3-a340-ecf8b7b017bc/
U2 - 10.1063/5.0213583
DO - 10.1063/5.0213583
M3 - Article
VL - 125
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 2
M1 - 021105
ER -
ID: 61279701