TY - GEN
T1 - Nonlinear Circular Dichroism in the Second-Harmonic Generation from AlGaAs Nanoparticle Dimers
AU - Melik-Gaykazyan, Elizaveta
AU - Frizyuk, Kristina
AU - Choi, Jae Hyuck
AU - Petrov, Mihail
AU - Park, Hong Gyu
AU - Kivshar, Yuri
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/6
Y1 - 2021/6
N2 - Here we study the nonlinear response of a nanoparticle dimer illuminated by a circularly polarized light. We observe, for the first time to our knowledge, nonvanishing circular dichroism of the second - harmonic signal due to the interplay of multipolar magnetic and electric Mie resonances provided the dimer axes is oriented under an angle to the crystalline lattice of the dielectric material. We develop a general formalism and modal theory to explain the origin of this unexpected phenomenon and verify our general theory by some experimental results for the resonant second harmonic generation (SHG) from the AlGaAs dimers placed on an engineering substrate. Our results show that Mie-resonant AlGaAs nanoparticles combined into a dimer with an arbitrarily oriented [100] crystalline lattice indeed reveal a non-zero and nonvanishing circular dichroism of the second harmonic signal.
AB - Here we study the nonlinear response of a nanoparticle dimer illuminated by a circularly polarized light. We observe, for the first time to our knowledge, nonvanishing circular dichroism of the second - harmonic signal due to the interplay of multipolar magnetic and electric Mie resonances provided the dimer axes is oriented under an angle to the crystalline lattice of the dielectric material. We develop a general formalism and modal theory to explain the origin of this unexpected phenomenon and verify our general theory by some experimental results for the resonant second harmonic generation (SHG) from the AlGaAs dimers placed on an engineering substrate. Our results show that Mie-resonant AlGaAs nanoparticles combined into a dimer with an arbitrarily oriented [100] crystalline lattice indeed reveal a non-zero and nonvanishing circular dichroism of the second harmonic signal.
UR - http://www.scopus.com/inward/record.url?scp=85117584965&partnerID=8YFLogxK
U2 - 10.1109/CLEO/Europe-EQEC52157.2021.9541584
DO - 10.1109/CLEO/Europe-EQEC52157.2021.9541584
M3 - Conference contribution
AN - SCOPUS:85117584965
T3 - 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021
BT - 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021
Y2 - 21 June 2021 through 25 June 2021
ER -