Nanocrystalline resonant silicon nanoparticle for highly efficient second harmonic generation
2017 PROGRESS IN ELECTROMAGNETICS RESEARCH SYMPOSIUM - SPRING (PIERS)(2017)
Abstract
Silicon is a centrosymmetric material, and the studies of nonlinear optical properties of silicon nanoparticles are primarily targeting the third-harmonic generation effects. Here we demonstrate that resonantly excited nanocrystalline silicon nanoparticles fabricated by an optimized laser printing technique exhibit strong second-harmonic generation (SHG) effects. We attribute an unexpectedly high yield of the nonlinear conversion to a nanocrystalline structure of nanoparticles supporting the Mie resonances. Our finding may open novel prospects for a design of nonlinear subwavelength light sources with exceptional functionalities fully integrated in Si-based nanoscale photonic circuits.
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Key words
nanocrystalline structure,nonlinear subwavelength light sources,Mie resonances,nonlinear conversion,second-harmonic generation effects,optimized laser printing technique,third-harmonic generation effects,nonlinear optical properties,centrosymmetric material,highly efficient second harmonic generation,nanocrystalline resonant silicon nanoparticle,Si
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