一种新型卟啉-石墨烯复合材料的制备及其对飞秒级脉冲激光器的能量调节性能研究

摘要

Photo-and redox-active organic dye[3-amino-5,10,15,20-tetra-phenyl-porphyrinato]-copper (II)covalently functionalized graphene composite(RGO-TPP)via amidation reaction has been synthe-sized and characterized by steady-state absorption,fluorescence,attenuated total reflection infrared(ATR-IR)and Raman spectroscopies,atomic force microscope(AFM)and thermogravimetric analysis(TGA). Using the Z-scan technique its ultrafastly near-infrared third-order nonlinear optical(NLO)performance had been tested.The results show that the novel composite effectively adjusted the threshold value of the beam-out energy to 85%of the RGO individual at 800 nm,pulse duration 70 fs,repetition rate of 100 Hz,input intensity of 116 uj of the laser pulses.%以光电活性染料3-氨基-5,10,15,20-四苯基铜卟啉通过酰胺化反应共价修饰石墨烯,得到一种新型功能复合材料(RGO-TPP),分别采用稳态吸收、荧光、全反射红外、拉曼、原子力显微镜和热重量分析表征材料的物理结构与性质,利用Z-扫描技术测试了材料的超快的近红外区三阶非线性光学性能(NLO).结果表明,当激光波长800nm,脉冲间隔70飞秒(fs),频率100Hz,激光脉冲能量116uj时,RGO-TPP复合材料对激光的能量调节阀值降低到原来的85%,有效地降低了激光的出射强度.