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Shaping the third-harmonic radiation from silicon nanodimers
Lei Wang1, Sergey Kruk1, Lei Xu2
1Nonlinear Physics Center, Research School of Physics and Engineering, Australian National University, Canberra ACT 2601, Australia. yuri.kivshar@anu.edu.au.
Nanoscale
|February 2, 2017
Summary
Silicon nanoparticle dimers enable control over light
Area of Science:
- Nanophotonics and nonlinear optics.
- Dielectric metamaterials and Mie resonances.
Background:
- High-index dielectric nanostructures offer control over light's electric and magnetic components.
- Mie resonances in nanostructures enhance nonlinear optical effects and control radiation directionality.
Purpose of the Study:
- Investigate third-harmonic generation in silicon nanoparticle dimers.
- Demonstrate control over nonlinear radiation directionality using engineered multipolar harmonic modes.
Main Methods:
- Numerical simulations of light-matter interactions in silicon dimers.
- Experimental fabrication and optical characterization of silicon nanoparticle dimers.
Main Results:
- Observed third-harmonic generation from silicon nanoparticle dimers.
- Demonstrated shaping of nonlinear radiation directionality via multipolar harmonic modes near Mie resonances.
Conclusions:
- Silicon nanoparticle dimers provide a platform for controlling nonlinear light emission.
- Engineered multipolar modes near Mie resonances enable directional nonlinear radiation.
