Efficient Second-Harmonic Generation in Nanocrystalline Silicon Nanoparticles
Makarov, Sergey; Petrov, Mihail I; Zywietz, Urs; Milichko, Valentin A; Zuev, DA; Lopanitsyna, Natalia Yu; Kuksin, Alexey Yu; Mukhin, Ivan S; Zograf, George P.; Ubyivovk, E. V.; Smirnova, Daria; Kivshar, Yuri
Recent trends to employ high-index dielectric particles in nanophotonics are motivated by their reduced dissipative losses and large resonant enhancement of nonlinear effects at the nanoscale. Because silicon is a centrosymmetric material, the studies of nonlinear optical properties of silicon nanoparticles have been targeting primarily the third-harmonic generation effects. Here we demonstrate, both experimentally and theoretically, that resonantly excited nanocrystalline silicon nanoparticles...[Show more]
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