White Light Optical Waveguide Detection of Transient Absorption Spectra in Ultrathin Organic Films upon Pulsed Laser Excitation
White Light Optical Waveguide Detection of Transient Absorption Spectra in Ultrathin Organic Films upon Pulsed Laser Excitation
复制标题
脉冲激光激发下超薄有机薄膜瞬态吸收光谱的白光光波导检测
DOI：
10.1246/cl.2001.1300
复制
发表时间：
2001
影响因子：
1.6
通讯作者：
T. Nagamura
中科院分区：
文献类型：
--
作者：
H. Kawai;Kazuhiro Nakano;T. Nagamura
将白光光波导（WOWG）方法应用于超薄聚合物薄膜的瞬态吸收光谱分析。用纳秒级Nd:YAG激光二次谐波激发OWG玻璃表面聚乙烯醇薄膜中的四苯基卟啉四磺酸（TPPS）。在532 nm处吸光度仅为0.0005的薄膜上，高灵敏度地检测到激发三重态TPPS的瞬态吸收光谱。
White light optical waveguide (WOWG) method was applied to transient absorption spectroscopy of ultrathin polymer films. Tetraphenylporphinetetrasulfonic acid (TPPS) in poly(vinyl alcohol) films on the surface of OWG glass was excited with the second harmonics of a nanosecond Nd:YAG laser. The transient absorption spectrum of excited triplet TPPS was detected highly sensitively for a film with the absorbance at 532 nm of only 0.0005.