Ultra‐Pure Chiral Third Harmonic Generation Enabled by Mie‐Resonant Dielectric Dimer
Source abstract
Abstract
Abstract Tailoring chiroptical responses at the nanoscale is crucial for on‐chip compact polarization manipulation and enantiomer sensing. Efficient chiral second and third harmonic generation has been successfully demonstrated from bulk materials to metamaterials. Here, pronounced linear and nonlinear circular dichroisms are obtained by rotating a dielectric nanocylinder dimer. It is revealed that the giant chiroptical effects originate from multipolar Mie resonances on the dimer, especially the magnetic dipole resonance. The calculated nonlinear g‐factor can reach −1.975 in the visible regime, indicating an ultra‐pure chiral third harmonic generation in the ultraviolet band. The presented results open new horizons for enhancing and modulating the linear and nonlinear chiroptical responses of nanostructures and can find potential applications in lasing and sensing.
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Research context
OpenAlex topics: Metamaterials and Metasurfaces Applications · Plasmonic and Surface Plasmon Research · Advanced biosensing and bioanalysis techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Physics, Harbin Institute of Technology Xidazhi Street No. 92 Harbin Heilongjiang 150001 China
Postdoctoral Research Station for Electronic Science and Technology Harbin Institute of Technology Xidazhi Street No. 92 Harbin Heilongjiang 150001 China
Nanofabrication Facility Suzhou Institute of Nano‐Tech and Nano‐Bionics Chinese Academy of Sciences Suzhou Jiangsu 215000 China
National Key Laboratory of Science and Technology on Tunable Laser Harbin Institute of Technology Yikuang Street No.2 Harbin Heilongjiang 150080 China
Funding
National Natural Science Foundation of China
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