【作者】 王东； 周广勇； 任燕； 许心光； 程秀凤； 邵宗书； 蒋民华；

【Author】 WANG Dong;ZHOU Guang-yong;REN Yan;XU Xin-guang;CHENG Xiu-feng;SHAO Zong-shu;JIANG Min-hua State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China

【机构】 山东大学晶体材料国家重点实验室；

【摘要】 将强双光子吸收染料trans-4-[p-(N-hydroxyethyl-N-methylamino)styryl]-N-methylpyridini-ump-toluene sulfonate(简称HMASPS)掺在甲基丙烯酸羟乙脂(2-hydroxyethyl methac-rylate,简称HEMA)中形成一种线性均匀聚合物,这种线性均聚物的发光性能较之HMASPS 在溶液中有了很大的改变。其双光子激发的荧光谱和双光子泵浦的超辐射谱、激射谱都向短波方向移动。单光子荧光寿命为3.562ns,双光子荧光寿命为4.116 ns,比溶液中的HMASPS荧光寿命提高了2个数量级。双光子泵浦的激射脉冲中有振荡现象。双光子吸收最强处与上转换效率最高处不重合。更多还原

【Abstract】 Doping strong two-photon absorption dye trans-4- [p-(N-hydroxyethyl-N-methylamino)-styryl]-N-methylpyridinium p-toluene sulfonate (abbreviated as HMASPS) into 2-hydr -oxyethyl methacrylate (abbreviated asHEMA) to form a linear homogenous polymer, the emission properties of the linear homogenous polymer show muchdifferences compared with that of the HMASPS solution. The spectra of two-photon excited fluorescence, two-photonpumped superradiation and two-photon pumped lasing all moved to the short wavelength. The one-photon and two-photon excited fluorescence lifetimes of the polymer are 3.562 and 4.116 ns respectively, which are larger two-ordersthan those of HMASPS in solution. The two-photon pumped lasing pulses show oscillating phenomenon. The place ofthe strongest two-photon absorption does not coincide with that of the highest upconversion efficiency.更多还原