【作者】 姜玉刚； 樊荣伟； 夏元钦； 陈德应；

【Author】 Jiang Yugang, Fan Rongwei, Xia Yuanqin, Chen Deying Institute of optical-electronics, Harbin Institute of Technology, Harbin, P. R. China, 150001

【机构】 哈尔滨工业大学光电子技术研究所；

【摘要】 采用以甲基丙烯酸甲酯(MMA)为基质制备了DCM固体染料激光介质。利用KHz飞秒激光纵向泵浦,通过Z-扫描方法,测得了固体染料激光介质的Z-扫描透过率曲线,对数据进行数值拟和,得到双光子吸收系数为0.2017cm/TW,通过计算得到DCM的双光子吸收截面为950.05GM。通过对染料溶液的双光子荧光特性进行了研究,发现相对于相同掺杂浓度的固体染料双光子荧光谱有明显的红移现象,用TICT模式对这种现象进行了解释。更多还原

【Abstract】 Solid dye samples based on polymethyl methacrylate (PMMA) doped with 4-(Dicyanomethylene)-2-methyl-6-(P-dimethyl-aminostyryl)-4H+pyran(DCM) were prepared. Using kHz fs laser as the pumped sourse, The transmittance curves of z-scan of DCM was measured by Z-scan method, through calculation, two-photon absorption coefficient was 0.2017cm/TW and two-photon absorption cross-sections was 950.05GM. The two-photon fluorescent characteristics of laser dyes solution were also studied. Comparing with solid dyes samples of the same doping concentrations, the peak value has red shift, and this phenomenon was explaned by TICT(Twisted Intramolecular Charge Transfer) model.更多还原