| DFB LD在光声气体检测系统中的应用研究 |
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| 引用本文： | 彭琛,刘先勇,蒙瑰,郑成坤.DFB LD在光声气体检测系统中的应用研究[J].红外,2011,32(11):19-24. |
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| 作者姓名： | 彭琛 刘先勇 蒙瑰 郑成坤 |
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| 作者单位： | 西南科技大学光声检测研究室,四川绵阳,621010 |
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| 基金项目： | 西南科技大学与四川省煤炭产业集团重大合作项目(07zh0164) |
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| 摘 要： | 针对选用分布反馈激光二极管(DFB LD)作为激励光源的光声气体检测系统,首先分析了温度和注入电流对激光稳定性(包括激射波长和输出光功率)的影响.然后提出了一种蝶形封装的DFB LD在光声甲烷检测系统中的应用方案.实验结果表明,该方案的温控系统和波长调制驱动模式可以产生稳定可靠的光声信号,具有一定的参考价值.最后根据现...
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| 关 键 词： | 光声光谱 分布反馈激光二极管 激光稳定性 蝶形封装 激光耦合 |
Application of DFB LD in Photoacoustic Gas Detection System |
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| PENG Chen,LIU Xian-yong,MENG Gui,ZHENG Cheng-kun.Application of DFB LD in Photoacoustic Gas Detection System[J].Infrared,2011,32(11):19-24. |
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| Authors: | PENG Chen LIU Xian-yong MENG Gui ZHENG Cheng-kun |
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| Affiliation: | PENG Chen,LIU Xian-yong,MENG Gui,ZHENG Cheng-kun (Institute of Photoacoustic Detection,Southwest University of Science and Technology,Mianyang 621010) |
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| Abstract: | For a photoacoustic gas detection system using a distributed feedback laser diode(DFB LD) as the excitation source,the influences of its temperature and injection current on laser stability including lasing wavelength and optical output,power are analyzed first.Then,a scheme to use a butterfly pachaged DFB LD in a photoacoustic methane detection system is proposed.The experimental result shows that the temperature control system and wavelength modulation driving mode used in this scheme can generate a stabl... |
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| Keywords: | photoacoustic spectrum distributed feedback laser diode laser stability butterfly package laser coupling |
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