TY - GEN
T1 - Chiral Harmonic Generation by Quasi-Bound States in the Continuum
AU - Antonov, A.
AU - Gorkunov, M.
AU - Kivshar, Y.
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - Quasi-bound states in the continuum (quasi-BICs) of dielectric metasurfaces, selectively coupled to circularly polarized waves, provide maximum linear-optical chirality. We consider how they can empower chiral nonlinear-optical processes. We demonstrate that using arbitrarily polarized pumping wave one can generate circularly polarized harmonics at the chiral quasi-BIC wavelength. Conversely, pumping at such a wavelength results in giant harmonic circular dichroism. We design maximum-chiral metasurfaces based on different semiconductor materials and simulate generation of second and third harmonics. We compare various scenarios and reveal feasible limits of generation enhancement and chirality.
AB - Quasi-bound states in the continuum (quasi-BICs) of dielectric metasurfaces, selectively coupled to circularly polarized waves, provide maximum linear-optical chirality. We consider how they can empower chiral nonlinear-optical processes. We demonstrate that using arbitrarily polarized pumping wave one can generate circularly polarized harmonics at the chiral quasi-BIC wavelength. Conversely, pumping at such a wavelength results in giant harmonic circular dichroism. We design maximum-chiral metasurfaces based on different semiconductor materials and simulate generation of second and third harmonics. We compare various scenarios and reveal feasible limits of generation enhancement and chirality.
UR - http://www.scopus.com/inward/record.url?scp=85177559715&partnerID=8YFLogxK
U2 - 10.1109/Metamaterials58257.2023.10289562
DO - 10.1109/Metamaterials58257.2023.10289562
M3 - Conference contribution
T3 - 17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023
SP - 13
EP - 15
BT - 17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023
Y2 - 11 September 2023 through 16 September 2023
ER -