We experimentally demonstrate significantly enhanced second harmonic generation using nanoengineered plasmonic nanocavities of core-shell structures (BaTiO3/Au). An enhancement factor of over 500 is measured in the second harmonic scattering efficiency compared to the bare core. (C) 2009 Optical Society of America
Camille Sophie Brès, Jianqi Hu, Anton Stroganov, Edgars Nitiss