Spectroscopic Properties and Three-photon Absorption Induced Optical Limiting of Series of Novel Nonlinear Chromophores  

作　　者：Fu-quan Guo Xiao-lao Sun Hao Liang Zhi-yuan Hu Qi-jin Zhang Hai Ming 

机构地区：[1]Department of Materials Engineering, Luoyang Institute of Science and Technology, Luoyang 471023, China [2]Department of Chemical Engineering, Huizhou University, Guangdong 516007, China [3]Department of Polymer Science and Engineering, University of Science and Technology of China Hefei 230026, China [4]Department of Physics, University of Science and Technology of China, Hefei 230026, China

出　　处：《Chinese Journal of Chemical Physics》2008年第3期227-232,共6页化学物理学报（英文）

基　　金：This work was supported by the National Natural Science Foundation of China （No.90201016）.

摘　　要：Three novel nonlinear chromophores with symmetric D-π-D molecular structure and extended conjugated length were synthesized. Solvatochromism analysis shows great symmetric intramolecular charge transfer occurring in chromophores by the enhancement in the dipole moment between the ground and excited states. The properties of optical power limiting induced by three-photon absorption （3PA） are demonstrated. Large 3PA coefficients and the corresponding molecular cross sections as high as 10^-74 cm^6s^2 were obtained for nanosecond laser pulses at 1.06μm from nonlinear transmission measurements.

关 键 词：Nonlinear chromophores SOLVATOCHROMISM Three-photon absorption Optical limiting 

分 类 号：O64[理学—物理化学]