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飞秒荧光亏蚀光谱技术研究液相体系取向弛豫
The Study of Orientational Relaxation in Solution Using Femtosecond Time-resolved Fluorescence Depletion Spectroscopy
【Abstract】 Femtosecond time-resolved fluorescence depletion spectroscopy was used in the study of the orientation relaxation of Rhodamine 700(LD700) and Oxazine 750(OX750) in DMSO. The anisotropy functions of the dye molecules were obtained from the fluorescence depletion spectra, as the polarization of probe pulse is parallel and perpendicular respectively. The results show that the transition dipole moment of the pump and the probe of LD700 and OX750 are parallel. The time constants of the orientation relaxation of these dye molecules in DMSO are 1.8 and 1.9 ps for LD700 and OX750, respectively.
【关键词】 取向弛豫;
激光染料;
飞秒激光;
荧光亏蚀光谱;
【Key words】 Orientational relaxation; Laser dye; Femtosecond laser; Fluorescence depletion spectroscopy;
【Key words】 Orientational relaxation; Laser dye; Femtosecond laser; Fluorescence depletion spectroscopy;
【基金】 国家自然科学基金资助项目 ( 2 983 3 0 80 );中国科学院知识创新计划 (DICPK2 0 0 /E3 )资助项目
- 【文献出处】 化学物理学报 ,Chinese Journal of Chemical Physics , 编辑部邮箱 ,2003年03期
- 【分类号】O657.3
- 【被引频次】1
- 【下载频次】88