手持/便携式激光拉曼测试装置中探头的设计与实验研究
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摘要
从手持/便携式角度出发,采用双光纤光路设计了激光拉曼测试装置中的探头,并确定关键器件性能、型号及尺寸.利用Zemax软件进行光学模拟仿真,得到入射光路的工作焦距为13.5mm,像方数值孔径为0.23;收集光路的像面焦距为13.46mm,数值孔径为0.235.用SolidWorks软件进行机械设计,TracePro软件进行探头整体光路模拟,通过计算机数字控制机加工和3D打印两种方式制作得到整体尺寸为50mm×33.5mm×17mm的探头.用设计的拉曼探头对酒精样品进行了测试,测得酒精拉曼光谱与商用产品测得的结果基本一致,且在200～300cm~(-1)波数范围内有更好的信号表现.对K粉及冰毒进行了拉曼光谱测试,实测数据与理论数据基本一致.实验结果表明拉曼探头的设计达到了预期效果,并具有良好的性能.
From the point view of handheld/portable scenario,a dual optical fiber path is adopted as Raman optical probe structure,and the performances,types and sizes of key components are determined.Optical simulation is carried out by Zemax software.The working focal length of the incident light path is 13.5 mm,the image square numerical aperture is 0.23,meanwhile the image plane focal length of the collected light path is 13.46 mm and the numerical aperture is 0.235.The whole optical path and relative structures of the probe are simulated by SolidWorks software and TracePro software.Finally,the probe shell with overall dimensions of 50 mm ×33.5 mm ×17 mm is fabricated by computer numerical control and 3D printing,respectively.The Raman spectrum of alcohol detected by the designed probe are almost the same as that by commonly used products on markets,and has better signal performance in the wave number range from 200 cm~(-1) to 300 cm~(-1).The Raman spectrum of drugs with methamphetamine components and K powder tested by the designed probe are in accordance with the theoretical data.The experimental results have proved the practicability of the designed handheld/portable probe.
From the point view of handheld/portable scenario,a dual optical fiber path is adopted as Raman optical probe structure,and the performances,types and sizes of key components are determined.Optical simulation is carried out by Zemax software.The working focal length of the incident light path is 13.5 mm,the image square numerical aperture is 0.23,meanwhile the image plane focal length of the collected light path is 13.46 mm and the numerical aperture is 0.235.The whole optical path and relative structures of the probe are simulated by SolidWorks software and TracePro software.Finally,the probe shell with overall dimensions of 50 mm ×33.5 mm ×17 mm is fabricated by computer numerical control and 3D printing,respectively.The Raman spectrum of alcohol detected by the designed probe are almost the same as that by commonly used products on markets,and has better signal performance in the wave number range from 200 cm~(-1) to 300 cm~(-1).The Raman spectrum of drugs with methamphetamine components and K powder tested by the designed probe are in accordance with the theoretical data.The experimental results have proved the practicability of the designed handheld/portable probe.
引文
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[3] WANG Zhe,FU Hao,LIANG Zhao-heng,et al.Surface enhanced Raman scattering-based tumor Immunoassay using PS@Ag nano-probes and Si@Ag array substrate[J].Acta Photonica Sinica,2018,47(12):1228002.王哲,洑颢,梁照恒,等.基于PS@Ag纳米探针和Si@Ag阵列基底的表面增强拉曼散射特性的肿瘤标志物免疫检测[J].光子学报,2018,47(12):1228002.
[4] SHEN Da-wa,ZHENG Fei,WU Na,et al.Trend analysis of Raman application in cultural relics and archaeological research[J].Spectroscopy and Spectral Analysis,2018,38(9):2657-2664.沈大娲,郑菲,吴娜,等.拉曼光谱在文物考古领域的应用态势分析[J].光谱学与光谱分析,2018,38(9):2657-2664.
[5]WU Hui-yang.Application of Raman spectrscopy in detection of inflammable and explosive dangerous goods[J].Journal of Jiangsu Police Institute,2016,31(6):111-113.吴辉阳.基于拉曼光谱技术的易燃易爆危险品检测[J].江苏警官学院学报,2016,31(6):111-113.
[6] WANG Hong-fei,HUANG-FU Yi-run,ZHANG Wei-fang,et al.Study on drug driving and rapid drug detection[J].Open Journal of Nature Science,2018,6(2):132-138.王鸿飞,黄埔一润,张韦凡,等.“毒驾”以及毒品快速检验研究[J].自然科学,2018,6(2):132-138.
[7] SUI Cheng-hua,TU Qian,YAN Bo,et al.Application of Raman spectroscopy in rapid detection of new-type drugs[J].Spectroscopy and Spectral Analysis.2018,38(11):3395-3400.隋成华,屠潜,鄢波,等.拉曼光谱在新型毒品快速检测种的应用[J].光谱学与光谱分析.2018,38(11):3395-3400.
[8] GAO Guo-ming,LI Xue,QIN Zong-ding,et al.New method for eliminating background fluorescence of Raman spectrum and its application[J].Acta Opcica Sinica,2013,33(2):265-273.高国明,李雪,覃宗定,等.消除拉曼光谱荧光背景的新方法及其应用[J].光学学报,2013,33(2):265-273.
[9] LU Shu-hua,WANG Zhao-ming,TIAN Fang.Application of illegal drugs detection based on surface enhanced Raman spectroscopy[J].Laser&Optoelectronics,2018,55(3):51-59.卢树华,王照明,田方.表面增强拉曼光谱技术在毒品检测中的应用[J].激光与光电子学进展,2018,55(3):51-59.
[10] CHU Bing-quan,LIN Lei,HE Yong.Rapid determination of histamine concentration in fish(Miichthys Miiuy)by surface-enhanced Raman spectroscopy and density functional theory[J].International Journal of Agricultural and Biological Engineering,2017,10(4):252-258.
[11] AN Yan,SUN Qiang,PIAO Ren-guan,et al.Optical system of the probe for a micro-Raman spectrometer[J].Laser&Optoelectronic Progress,2012,49(3):151-155.安岩,孙强,朴仁官,等.用于微型拉曼光谱仪的外光路光学系统[J].激光与光电子学进展,2012,49(3):151-155.
[12] ZOU Wen-long,CAI Zhi-jian,WU Jian-hong.Review of development of portable Raman spectrometer[J].Optical Instruments,2011,33(6):86-90.皱文龙,蔡志坚,吴建宏.便携式拉曼光谱仪发展综述[J].光学仪器,2012,33(6):86-90.
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[15] REN Xiao-dong,LEI Wu-hu,ZENG Ling-qing,et al.Thermal and mechanical effect of the narrow band filter irradiated by lase at oblique incidence[J].Acta Photonica Sinica,2018,47(11):1114001.任晓东,雷武虎,曾凌清,等.激光斜入射窄带滤光片的热力效应[J].光子学报,2018,47(11):1114001.
[16] ZHANG Xin-ting,KANG Lei,AN Zhi-yong,et al.Design of a single lens laser triangulation probe based on PSD[J].Acta Photonica Sinica,2018,47(7):0722001.张欣婷,亢磊,安志勇,等.基于PSD的单透镜激光三角测头设计[J].光子学报,2018,47(7):0722001.
[17] LI Xu-yang,NI Dong-wei,YANG Ming-yang,et al.Design of large field of view space camera optical system based on freeform surfaces[J].Acta Photonica Sinica,2018,47(9):0922003.李旭杨,倪栋伟,杨明洋,等.基于自由曲面的大视场空间相机光学系统设计[J].光子学报,2018,47(9):0922003.
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