Abstract
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.
| Original language | English |
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| Title of host publication | 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9781665418768 |
| DOIs | |
| Publication status | Published - 2021 Jun |
| Event | 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021 - Munich, Germany Duration: 2021 Jun 21 → 2021 Jun 25 |
Publication series
| Name | 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021 |
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Conference
| Conference | 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021 |
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| Country/Territory | Germany |
| City | Munich |
| Period | 21/6/21 → 21/6/25 |
Bibliographical note
Publisher Copyright:© 2021 IEEE.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics