Improved second harmonic generation from organic-dye-doped polymer/silica hybrid materials

被引:19
作者
Hou, ZJJ
Liu, LYY
Xu, L [1 ]
Xu, ZLL
Wang, WCC
Li, FMM
Ye, MXX
机构
[1] Fudan Univ, Dept Phys, Lab Laser Phys & Opt, State Key Lab Mat Modificat Lasers Electron & Ion, Shanghai 200433, Peoples R China
[2] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China
关键词
D O I
10.1021/cm9902523
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this study, we investigated the second-order optical nonlinearity and its thermal stability of DR1 (disperse red 1) doped poly(methyl methacrylate) (PMMA)/silica gel films. We found that in situ polymerization of sol-gel precursors (tetraethoxysilane, TEOS) in a polymer generated a hybrid matrix which is a good tradeoff between a silica gel and a polymer matrix. The nonlinear thermal stability of the hybrid system increased significantly compared to that of a poled DR1/PMMA film. Our result proved that the combination of a poled polymer and the sol-gel technique provides a way to increase the thermal stability of nonlinear optical thin films fabricated from existing materials rather than synthesizing new chemical compounds. Several factors which affect the second-order optical nonlinearity of the hybrid system were also examined.
引用
收藏
页码:3177 / 3180
页数:4
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