Multifold Enhancement of Third-Harmonic Generation in Dielectric Nanoparticles Driven by Magnetic Fano Resonances

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• 作者：Alexander S. Shorokhov ; Elizaveta V. Melik-Gaykazyan ; Daria A. Smirnova ; Ben Hopkins ; Katie E. Chong ; Duk-Yong Choi ; Maxim R. Shcherbakov ; Andrey E. Miroshnichenko ; Dragomir N. Neshev ; Andrey A. Fedyanin ; Yuri S. Kivshar
• 刊名：Nano Letters
• 出版年：2016
• 出版时间：August 10, 2016
• 年：2016
• 卷：16
• 期：8
• 页码：4857-4861
• 全文大小：295K
• 年卷期：0
• ISSN：1530-6992

文摘

Strong Mie-type magnetic dipole resonances in all-dielectric nanostructures provide novel opportunities for enhancing nonlinear effects at the nanoscale due to the intense electric and magnetic fields trapped within the individual nanoparticles. Here we study third-harmonic generation from quadrumers of silicon nanodisks supporting high-quality collective modes associated with the magnetic Fano resonance. We observe nontrivial wavelength and angular dependencies of the generated harmonic signal featuring a multifold enhancement of the nonlinear response in oligomeric systems.