Enhanced third harmonic generation by organic materials on high-Q plasmonic photonic crystals

This is the publisher’s final pdf. The published article is copyrighted by the Optical Society of America and can be found at: http://www.opticsinfobase.org/oe/home.cfm.The enhanced optical nonlinearity enabled by localized\ud plasmonic fields has been well studied for all-optical switching processing\ud (AOSP) devices for future optical communication systems. In this work,\ud plasmonic photonic crystals with a nonlinear polycarbonate/polymethine\ud blend cladding layer are designed to enhance the third harmonic generation\ud (THG) at the telecom wavelengths (~1550 nm). Due to the presence of he\ud two-dimensional (2-D) gold nano-patch arrays with improved Q-factor and\ud high local fields, more than 20 × of enhanced THG signals in the hybrid\ud organic-plasmonic nanostructure are experimentally observed. The\ud enhanced THG in the hybrid organic-plasmonic materials suggested that\ud such extraordinary nonlinear effects can be used for AOSP devices and\ud wavelength conversion