基于中红外DFB-ICL激光器的硫系恶臭气体传感器

大气与环境光学学报 ›› 2015, Vol. 10 ›› Issue (2): 165-173.

• “大气环境光学探测技术”专辑 • 上一篇下一篇

基于中红外DFB-ICL激光器的硫系恶臭气体传感器

杜振辉, 张哲远, 甄卫萌, 熊博, 李金义

(天津大学精密测试技术及仪器国家重点实验室，天津 300072)

收稿日期:2014-12-26 出版日期:2015-03-28 发布日期:2015-04-02
通讯作者: 杜振辉(1967-)，男,河北人，博士，副教授、硕士生导师。主要从事光学测试技术、环境监测技术与仪器、嵌入式系统设计等教学和科研工作。 E-mail:duzhenhui@tju.edu.cn
作者简介:杜振辉(1967-)，男,河北人，博士，副教授、硕士生导师。中国光学学会环境光学专业委员会委员，中国仪器仪表学会环境与安全检测仪器分会理事，中国仪器仪表学会气环境监测专业委员会委员。主要从事光学测试技术、环境监测技术与仪器、嵌入式系统设计等教学和科研工作，目前在研国家重大科学仪器开发专项项目。
基金资助:
国家重大科学仪器设备开发专项（No. 2012YQ06016501）资助

Mid-Infrared DFB-ICLs Based Sensor for Odorous Sulfocompounds Monitoring

DU Zhenhui, ZHANG zheyuan, ZHEN Weimeng, XIONG Bo, LI Jinyi

(State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China)

Received:2014-12-26 Published:2015-03-28 Online:2015-04-02

摘要/Abstract

摘要：

含硫化合物是主要恶臭物质之一，为了实现污染源中含硫化合物排放的连续监测，研制了中红外激光气体传感器。该传感器采用中红外分布反馈结构的带间级联激光器（DFB-ICL）为光源，工作波长在3.3 μm附近，以空芯光波导（芯径1000 μm、长度5 m）做气体池，采用自制多通道数字锁相放大器，同时解调1f和2f谐波信号，通过1f归一化实现免校准测量。使用不同波长激光器可以检测甲硫醇、甲硫醚、二甲基硫醚、硫化氢等硫系恶臭气体。

关键词: 激光气体传感器, 带间级联激光器, 空芯光波导, 恶臭物质, 含硫有机物, 甲硫醇, 甲硫醚, 二甲基硫醚

Abstract:

Sulfocompounds is one of the main odor material, A mid-infrared laser based gas sensor is developed for continuous monitoring of the sulfocompounds in pollution emissions. A mid-infrared distributed feedback interband cascade laser (DFB-ICL) is used as light source, and the working wavelength was about of 3.3 μm. A hollow silica waveguide is used for gas cell, and the core diameter is 1000 μm, the length is 5 m. A home-made multi-channel digital lock-in amplifier is adopted to demodulate the 1f and 2f harmonics simultaneously, and calibration-free measurement has been attained by normalized the 2f harmonics with the 1f harmonics. Different wavelength of lasers can be applied to detect methyl mercaptan, dimethyl sulfide, dimethyl sulfide and hydrogen sulfide.

Key words: laser based gas sensors, interband cascade laser, hollow silica waveguide, odorous compounds, sulfocompounds, methyl mercaptan, dimethyl sulfide, dimethyl disulfide

中图分类号:

杜振辉张哲远甄卫萌熊博李金义. 基于中红外DFB-ICL激光器的硫系恶臭气体传感器[J]. 大气与环境光学学报, 2015, 10(2): 165-173.

DU Zhen-Hui, ZHANG Zhe-Yuan, ZHEN Wei-Meng, XIONG Bo, LI Jin-Yi. Mid-Infrared DFB-ICLs Based Sensor for Odorous Sulfocompounds Monitoring[J]. Journal of Atmospheric and Environmental Optics, 2015, 10(2): 165-173.

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基于中红外DFB-ICL激光器的硫系恶臭气体传感器

Mid-Infrared DFB-ICLs Based Sensor for Odorous Sulfocompounds Monitoring

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