Abstract:A new method for measuring time-resolved spectrum (TRS) is brought forward. Programming with assemble language controlled the micro-control-processor(AT89C51), and a kind of peripheral circuit constituted the drive circuit, which drived the stepping motor to run the monochromator. So the light of different kinds of expected wavelength could be obtained. The optical signal was transformed to electrical signal by optical-to-electrical transform with the help of photomultiplier tube (Hamamatsu 1P28). The electrical signal of spectrum data was transmitted to the oscillograph. Connecting the two serial interfaces of RS232 between the oscillograph and computer, the electrical signal of spectrum data could be transmitted to computer for programming to draw the attenuation curve and time-resolved spectrum (TRS) of the swatch. The method for measuring time-resolved spectrum (TRS) features parallel measurement in time scale but serial measurement in wavelength scale. Time-resolved spectrum (TRS) and integrated emission spectrum of Tb3+ in swatch Tb(o-BBA)3phen were measured using this method. Compared with the real time-resolved spectrum (TRS). It was validated to be feasible, credible and convenient. The 3D spectra of fluorescence intensity-wavelength-time, and the integrated spectrum of the swatch Tb(o-BBA)3phen are given.
[1] CHEN Guo-zhen, HUANG Xian-zhi, ZHENG Zhu-zi, et al(陈国珍,黄贤智,郑朱梓,等). Analysis Method of Fluorescence(荧光分析法). Beijing: Science Press(北京:科学出版社),1990. [2] LIU Jie, YU Chang-qing(刘 杰,于常青). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2005, 25(1): 73. [3] Nicolas H Bings, Annemie Bogaerts, Jose A C Broekaert. Anal. Chem., 2004, 76: 3313. [4] QIAN Guo-dong, WANG Min-quan, HUANG Shi-hua(钱国栋,王民权,黄世华). Chinese Journal of Luminescence(发光学报), 1998, 19(1): 60. [5] WANG Ying, MO Jin-yuan(王 瑛,莫金垣). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2005, 25(1): 124. [6] WEN Ming, JI Hai-yan(闻 明,吉海彦). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2004, 24(10): 1276. [7] HUANG Shi-hua(黄世华). Luminescence Dynamics of Ion Centers(离子中心的发光动力学). Beijing: Science Press(北京:科学出版社),2002.