光声光谱气体传感技术研究进展 |
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引用本文: | 曹渊,解颖超,王瑞峰,刘锟,高晓明,张为俊. 光声光谱气体传感技术研究进展[J]. 应用光学, 2019, 40(6): 1152-1159. DOI: 10.5768/JAO201940.0605003 |
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作者姓名: | 曹渊 解颖超 王瑞峰 刘锟 高晓明 张为俊 |
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作者单位: | 中国科学院安徽光学精密机械研究所,安徽 合肥 230031 |
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基金项目: | 国家自然科学基金面上项目41475023国家自然科学基金面上项目61775221 |
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摘 要: | 光声光谱是通过光声效应把样品吸收光谱转换成声波探测,实现样品成分、浓度分析检测的一种光谱传感技术,是光谱学的一个重要分支。光声光谱除了具有吸收光谱的高选择性、高灵敏度外,还具有信号只跟样品光吸收有关,不受散射光影响,零背景, 信号与光功率成正比以及信号探测器不受光波长影响等诸多优点。在环境监测、工业过程控制与检测、医学诊断和国防危化品检测等领域得到了越来越多的应用,呈现出快速发展的趋势。除了传统的共振光声光谱技术,近年来先后出现了悬臂增强型光声光谱、石英音叉谐振增强型光声光谱、多通道光声光谱等各具特色的新技术。对光声光谱气体传感技术的研究进展进行了介绍,并分析了其应用前景和未来发展趋势。
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关 键 词: | 光声光谱 气体传感 激光 吸收 石英音叉 悬臂 |
收稿时间: | 2019-06-17 |
Recent advances of photoacoustic spectroscopy techniques for gases sensing |
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Affiliation: | Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China |
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Abstract: | Photoacoustic spectroscopy has been an important branch of spectroscopy, which refers to a kind of spectral sensing technology that converts sample absorbed optical energy into acoustic detection wave through photoacoustic effect and realizes detection of sample composition and concentration analysis with acoustic sensor. In addition to high selectivity and high sensitivity of the spectrum absorption, photoacoustic spectroscopy offers several intrinsic attractive features, including signal only related to sample light absorption, free from scattered light, zero background and signal proportional to optical power, as well as measured with wavelength-independent acoustic transducers. More and more applications have been found in the fields of environmental monitoring, industrial process control and detection, medical diagnosis and hazardous chemicals detection in national defense. Besides the traditional resonant photoacoustic spectroscopy technology, there have been new techniques such as cantilever enhanced photoacoustic spectroscopy, quartz tuning fork enhanced photoacoustic spectroscopy and multi-channel photoacoustic spectroscopy. The recent advances of photoacoustic spectroscopy techniques for gases sensing are reviewed, and their application prospects and future development trends are analyzed. |
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