A new type of organic donor-pi-acceptor compounds with third-order nonlinear optical properties

作者：Cai Zhibin; Zhou Mao; Gao Jianrong^*

来源：Optical Materials, 2009, 31(8): 1128-1133.

DOI：10.1016/j.optmat.2008.12.003

• Nonlinear optics
• DFWM technique
• Donor-pi-acceptor compound
• Synthesis
• Nonlinear optical property

Ten new organic donor-pi-acceptor compounds were synthesized and characterized by UV, IR, (1)H NMR and elemental analysis. Off-resonant third-order nonlinear optical properties of the compounds were measured using femtosecond laser and degenerate four-wave mixing technique. The third-order nonlinear optical susceptibilities chi((3)) were 3.50-4.29 x 10(-13) esu. The nonlinear refractive indexes n(2) were 6.42-7.89 x 10(-12) esu. The second-order hyperpolarizabilities gamma of the molecules were 3.63-4.47 x 10(-31) esu. The response times were 69-112 fs. The results show that these compounds have potential nonlinear optical applications.

• 出版日期2009-6
• 单位浙江工业大学