基于环腔光纤激光器的气体检测方法  

Method of Gas Detection Based on Intra-Cavity Erbium-Doped Fiber Laser

作　　者：贾大功[1,2] 刘琨[1,2] 井文才[1,2] 汪(讠燕) 张红霞[1,2] 张以谟[1,2] 

机构地区：[1]天津大学精密仪器与光电子工程学院,天津300072 [2]光电信息技术科学教育部重点实验室,天津300072

出　　处：《中国激光》2009年第9期2384-2387,共4页Chinese Journal of Lasers

基　　金：国家自然科学基金(60577013);新世纪优秀人才支持计划;天津市自然科学基金(2009F2-0019)资助课题

摘　　要：基于内腔光纤激光器原理设计了气体检测系统,可以检测气室中待测气体的种类和浓度。在分析气体检测系统的基本构成原理基础上,以乙炔气体为例,进行了气体测试实验,并就检测灵敏度、浓度检测精度两方面分析和计算了该检测系统的性能。结果表明,基于内腔光纤激光器原理的气体检测系统重复性小于0.07,气体检测的灵敏度小于0.03%,气体检测的精度不小于0.17%。In this paper, a gas detection system using intra-cavity laser spectroscopy technique is designed. It can be used to measure the concentration of multi-gas. Through analysis of the basic architecture and principle of gas detection system, the different standard concentration of acetylene gas is measured and the performances of gas detection system have been evaluated by calculating the absorbance of standard gas, such as detection sensitivity of the system, repeat accuracy and measurement precision. The experimental results indicated that the repeat accuracy of the gas detection system is less than 0.07. The detection sensitivity and measurement precision is less than 0.03 % and 0.17 %, respectively.

关 键 词：光纤激光器 气体检测 环腔法 乙炔 灵敏度 测试精度 

分 类 号：TN253[电子电信—物理电子学] TN247