a.Institute of Polymer Science, Zhongshan University, Guangzhou 510275, China;b.State Key Lab of Ultrafast Laser Spectroscopy, Zhongshan University, Guangzhou 510275, China
Abstract:
Four phenoxysilicon networks for nonlinear optical (NLO) applications were designed and prepared by an extended sol-gel process without additional H2O and catalyst. All poled polymer network films possess high second-order nonlinear optical coefficients (d33) of 10-?~10-8 esu. The investigation of NLO temporal stability at room temperature and elevated temperature (120℃) indicated that these films exhibit high d33 stability because the orientation of the chromophores are locked in the phenoxysilicon organic/inorganic networks.