Eclipsing thermal lens spectroscopy for fluorescence quantum yield measurement

被引：18
|
作者：
Estupinan-Lopez, C. [1 ]
Tolentino Dominguez, C. [1 ]
de Araujo, R. E. [1 ]
机构：
[1] Univ Fed Pernambuco, Lab Biomed Opt & Imaging, BR-50740530 Recife, PE, Brazil
来源：
OPTICS EXPRESS | 2013年 / 21卷 / 15期
关键词：
RHODAMINE; 6G; OPTICAL SATURATION; Z-SCAN; EFFICIENCY; ABSORPTION; SPECTROMETRY; STANDARDS; EMISSION; LASERS; GLASS;
D O I：
10.1364/OE.21.018592
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A modified spatial filtering method that improves the sensitivity of single-beam and mode-mismatched thermal lens spectroscopy (TLS) for fluorescence quantum yield measurement is presented. The method is based on the detection of the external part of a laser beam transmitted by the fluorescent sample (eclipsing detection mode). The experimental results show that the signal/noise (S/N) ratio of the absolute quantum yield of Rh6G can be enhanced up to similar to 1400% using the eclipsing detection mode on the TLS experimental setup. The method was evaluated by measuring the fluorescence quantum yield of varying concentration of ethanolic solutions of Rhodamine 6G. (C)2013 Optical Society of America
引用
收藏
页码：18592 / 18601
页数：10
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