| 基于AOTF的便携式近红外光谱测量仪的研制 |
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| 引用本文： | 高明辉,林洁琼,廉凤慧,施江天.基于AOTF的便携式近红外光谱测量仪的研制[J].吉林工学院学报,2008,29(3):314-318. |
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| 作者姓名： | 高明辉 林洁琼 廉凤慧 施江天 |
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| 作者单位： | [1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]长春工业大学机电工程学院,吉林长春130012 [3]空军航空大学航理系,吉林长春130022 [4]中国人民解放军装甲兵技术学院机械工程系,吉林长春130117 |
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| 基金项目： | 长春市科技局基金资助项目 |
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| 摘 要： | 为实现对宝石、药品等物质的现场分析，采用声光可调滤光器和光栅扫描两种技术完成系统的分光。机械结构采用精密丝杠螺母、杠杆传动的正弦机构。运用锁相放大技术和同步累积对微弱信号进行检测。测试实验结果表明，系统信噪比达到S／N=8348：1；重复性误差小于2％；光谱带宽优于8nm。
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| 关 键 词： | 声光可调滤光器 光栅扫描 锁相放大 信噪比 |
Portable NIR spectrometer based on AOTF |
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| GAO Ming-hui,LIN Jie-qiong,LIAN Feng-hui,SHI Jiang-tian.Portable NIR spectrometer based on AOTF[J].Journal of Jilin Institute of Technology,2008,29(3):314-318. |
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| Authors: | GAO Ming-hui LIN Jie-qiong LIAN Feng-hui SHI Jiang-tian |
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| Institution: | 1.Changchun Institute of Optics;Fine Mechanics and Physics;Changchun 130033;China;2.School of Mechatronic Engineering;Changchun University of Technology;Changchun 130012;3.Aviation Theory Department;Air Force Aviation University;Changchun 130022;4.Department of Machanical Engineering;Armor Technique Institute of PLA;Changchun 130117;China |
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| Abstract: | In order to analyze some substances like gem or drugs in situ, the dispersion of light is finished with both technologies of the acousto-optic adjustable optical filter and the raster scanning. The precision guide screw nut and the leverage sine machine are applied in the mechanic structure. The phase-lock amplification and the synchronized accumulation are used for weak signal detection. The tests indicate that SNR of the system achieves 8 348 ： 1; the repeatability error is smaller than 2 %; the spectral bandwidth is over 8 nm. |
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| Keywords: | Acousto-Optic Tustable Filter （AOTF） raster scanning phase-lock amplification SNR |
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