Details

Autor(en) / Beteiligte

• Frizyuk, Kristina
• Melik-Gaykazyan, Elizaveta
• Choi, Jae-Hyuck
• Petrov, Mihail I
• Park, Hong-Gyu
• Kivshar, Yuri

Titel

Nonlinear Circular Dichroism in Mie-Resonant Nanoparticle Dimers

Ist Teil von

• Nano letters, 2021-05, Vol.21 (10), p.4381-4387

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We studied the nonlinear response of a dimer composed of two identical Mie-resonant dielectric nanoparticles illuminated normally by a circularly polarized light. We developed a general theory describing hybridization of multipolar modes of the coupled nanoparticles and reveal nonvanishing nonlinear circular dichroism (CD) in the second-harmonic generation (SHG) signal enhanced by the multipolar resonances in the dimer, provided its axis is oriented under an angle to the crystalline lattice of the dielectric material. We supported our multipolar hybridization theory by experimental results obtained for the AlGaAs dimers placed on an engineered substrate.