A new detection technique of gas concentration with optical spectrum absorption at near-IR wavelength  

作　　者：井文才 周之砚 宋霄 吴頔 贾大功 张红霞 张以谟 

机构地区：[1]College of Precision Instrument & Optoelectronic Engineering,Tianjin University,and Key Laboratory of Optoelectronics Information and Technical Science,Ministry of Education

出　　处：《Optoelectronics Letters》2009年第1期54-56,共3页光电子快报（英文版）

基　　金：supported by the National Natural Science foundation of China (contact No. 60577013);the New Century Support Program for Talented Young Teachers in Universities,Ministry of Education of China

摘　　要：Wavelength modulation technique(WMT) and active intracavity technique(ACIT) are first introduced in this paper,which are used to realize the concentration detection of methane and acetylene respectively.When ACIT is combined with wavelength sweep technique(WST),the detection sensitivity of acetylene can be enhanced sharply.When ACIT is combined with WST and WMT,the detection sensitivity of acetylene can be enhanced further.

关 键 词：Absorption spectroscopy Gas absorption LIGHTING METHANE Optical sensors 

分 类 号：TP274.5[自动化与计算机技术—检测技术与自动化装置]