华侨大学学报（自然科学版）2011，Vol.32Issue(6)：623-627,5.
脉冲LED激发罗丹明B瞬态荧光光谱特征
Spectrum Characteristics of the Transient Fluorescence Spectra of Rhodamine B Stimulated by Pulsed LED
摘要
Abstract
In this paper, light-emitting diode (LED) source as excitation light pulses is used to study the transient spectra characteristics of rhodamine B. Excitation light source with three central wavelengths are 406 ran, 464 nm and 528 ran super bright purple, blue and green LED. Experimental results show that the fluorescence intensities are very different with the different excitation light color (wavelength), pulse duration and different concentration of the rhodamine B. In the same concentration, if the excitation duration (pulse width) is less than 10 tns? Only green fluorescent excitation can produce strong fluorescence, purple and blue light can not produce fluorescence; if the pulse width is greater than 20 ms, the purple and blue can excite fluorescence but the intensity of excitation is much smaller than that of the green, and the fluorescence of blue is weakest Using a suitable pulse width of purple, blue and green LED as the excitation source, the characteristics of the fluorescence spectra of rhodamine B can be obtained.关键词
发光二极管/罗丹明B/荧光光谱/脉冲宽度Key words
light emitting diode/rhodamine B/fluorescence spectra/pulse duration分类
信息技术与安全科学引用本文复制引用
叶明树,田治富,胡庆,庄其仁..脉冲LED激发罗丹明B瞬态荧光光谱特征[J].华侨大学学报（自然科学版）,2011,32(6):623-627,5.基金项目
福建省自然科学基金资助项目(A0710012) （A0710012）
