基于双飞秒光学频率梳的CO_(2)光谱测量  

CO_(2)spectroscopy measurement based on dual femtosecond optical frequency combs

作　　者：李刻泰 李晓峰 夏传青 武腾飞[1,2] 杨永军 蔡静[1] LI Ketai;LI Xiaofeng;XIA Chuanqing;WU Tengfei;YANG Yongjun;CAI Jing(Beijing Changcheng Institute of Metrology&Measurement,Beijing100095,China;Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology,School of Optics and Photonics,Beijing Institute of Technology,Beijing100081,China)

机构地区：[1]航空工业北京长城计量测试技术研究所,北京100095 [2]北京理工大学光电学院精密光电测试仪器及技术北京市重点实验室,北京100081

出　　处：《光学技术》2025年第2期218-224,共7页Optical Technique

基　　金：自然科学基金项目(U2241258)。

摘　　要：文章研究了基于近红外双光梳光谱测量技术的CO_(2)浓度测量方法。实验采用两台中心波长为1550nm的飞秒光学频率梳,通过同步精密锁定的双光梳光谱系统,选用1572nm波段的CO_(2)吸收谱线进行测量。结果显示,测量的CO_(2)浓度误差为4.27%,光谱分辨率达到113MHz。研究验证了双光梳系统在近红外波段CO_(2)测量的可行性,并探讨了提升测量精度的方法,对超快激光光谱测量技术的发展具有重要参考价值。The CO_(2)concentration measurement technique based on near-infrared dual-comb spectroscopy is investigated.The experiment utilized two femtosecond frequency combs with a central wavelength of 1550nm,constructing a dual-comb spectroscopy system through precise locking technology,and selected the CO_(2)absorption spectral line at 1572nm for measurement.The results show a measurement error of 4.27%for CO_(2)concentration,with a spectral resolution of 113MHz.The study confirms the feasibility of the dual-comb system in near-infrared CO_(2)measurement and discusses methods to enhance measurement accuracy,providing significant reference value for the development of ultrafast laser spectroscopy technology.

关 键 词：近红外 CO_(2)浓度 飞秒光学频率梳 双光梳光谱技术 

分 类 号：X831[环境科学与工程—环境工程]