Design and analysis of a range-extended acidity detector based on a Nile red laser with tandem cuvette system  

作　　者：Yuwei Fang Junjie Cheng Shengbo Wang Chun Gu Gang Zou Hai Ming Lixin Xu 方昱玮;程军杰;王声波;顾春;邹纲;明海;许立新(Department of Optics and Optical Engineering,University of Science and Technology of China,Hefei 230026,China;CAS Key Laboratory of Soft Matter Chemistry,Department of Polymer Science and Engineering,iChEM,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]Department of Optics and Optical Engineering,University of Science and Technology of China,Hefei 230026,China [2]CAS Key Laboratory of Soft Matter Chemistry,Department of Polymer Science and Engineering,iChEM,University of Science and Technology of China,Hefei 230026,China

出　　处：《Chinese Optics Letters》2020年第11期44-49,共6页中国光学快报（英文版）

基　　金：supported by the National Key Research and Development Program of China(No. 2016YFB0401901);Major Science and Technology Special Project in Anhui (No. 17030901001);National Natural Science Foundation of China (Nos. 21574120and 21774115);Fundamental Research Funds for the Central Universities (No. WK2060200025);Science and Technological Fund of Anhui Province for Outstanding Youth (No. 1608085J01)。

摘　　要：A range-extended acidity detector based on Nile red was designed and analyzed in this work. In light of the good lasing property and solvatochromism characteristic of Nile red/ethanol solution, we have obtained laser spectra of sulfuric acid in different concentrations doped in this substrate. Moreover, to expand the acidity detection range, we proposed a tandem cuvette system containing rhodamine 6G/ethanol and Nile red/ethanol. Consequently, the detection range could be enlarged from 26 nm to 40 nm, by changing not only the wavelength peak but also by the intensity ratio of dual-wavelength laser output. In addition, by changing the detection and substrate materials, the whole detection range could be expanded, and therefore a wide range of applications in polarity and acidity detection could be implemented via this method.

关 键 词：acidity detector solvatochromism characteristic Nile red tandem cuvette system 

分 类 号：TH744.5[机械工程—光学工程]