有机色素类三阶非线性光学材料的合成与性能研究.pdfVIP

有机色素类三阶非线性光学材料的 合成与性能研究 * 蔡志彬，高建荣 ，项斌，贾建洪 (浙江工业大学绿色化学合成技术国家重点实验室培育基地，杭州 310014，中国) 1 摘 要：分子设计并合成了三大系列的有机色素类化合物，并用 UV，IR， H NMR 和元素分析表征了结构。采 用飞秒激光，运用简并四波混频（DFWM）法，研究了化合物的三阶非线性光学性能。它们的三阶非线性光学 极化率 χ(3) -13 -12 为 2.64-3.55×10 esu，非线性折射率 n 为 4.85-6.52×10 esu，分子二阶超极化率 γ 为 2 -31 2.85-3.42×10 esu。探索了化合物的分子结构对三阶非线性光学性能的影响。 关键词：非线性光学；简并四波混频；有机色素；合成 Study on the Synthesis and Third-order Optical Nonlinearities of Organic Chromophores CAI Zhi-bin, GAO Jian-rong，XIANG Bin , JIA Jian-hong （State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China ） Abstract: Three types of organic chromophores were designed and synthesized. Their structure were characterized by UV, IR, 1H NMR and elemental analysis. By using femtosecond laser, the third-order optical nonlinearities of the compounds were measured with degenerate four-wave mixing technique. The third-order nonlinear (3) -13 optical susceptibilities X of the compounds were 2.64-3.55 ×10 esu. The nonlinear refractive index n -12 2 were 4.85-6.52 ×10 esu.The second-order hyperpolarizabilities γ -31 of the molecules were 2.85-3.42 ×10 esu. The influence of the molecular structure on the third-order optical nonlinearity was studied.