title: A frozen matrix hybrid optical nonlinear system enhanced by a particle lens.
abstract: In this work, a Graphene Oxide (GO) nano-sheet and SiO2 micro-bead hybrid system based on a frozen matrix was investigated for its enhanced optical nonlinear performance. A frozen matrix is a novel approach that hosts the optical nonlinear nano-particles, which combines the strengths from both liquid and solid phase systems for high performance photonic applications. SiO2 micro-beads were used to induce a local field enhancement effect that improved the optical nonlinearity of GO nano-sheets. The nonlinear performance of the hybrid system is several orders higher than the existing GO nano-sheet liquid dispersion. In addition, this frozen matrix and the local field enhancement effect are two facile and versatile methods that can be applied to many types of nano-particle dispersions.
authors: Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117576, Singapore. elehmh@nus.edu.sg.
authors: Lianwei
authors: L
authors: Chen
authors: Xiaorui
authors: X
authors: Zheng
authors: Zheren
authors: Z
authors: Du
authors: Baohua
authors: B
authors: Jia
authors: Min
authors: M
authors: Gu
authors: Minghui
authors: M
authors: Hong