摘要
基于CO_2的近红外吸收光谱特征,提出了一种可用于CO_2排放源监测的光参量振荡(OPO)和放大(OPA)系统,该系统由输入OPO的激光双种子源、OPO和OPA、带窄线宽激光种子源脉冲Nd:YAG基频激光器、高精度和频率稳定的双通道波长计等组成,可交替输出1.572μm的双波长激光束。系统经初步调试后,泵浦脉冲能量为326 mJ时获得近25%的转换效率,脉冲能量近80 mJ,满足地基差分吸收激光雷达测量对流层CO_2浓度廓线的需要。
Based on the near infrared absorption spectroscopy characteristics of CO2, an optical parametric oscillation （OPO） and amplification （OPA） system is proposed for the monitoring of CO2 emission sources The system is composed of laser dual-seed source injected into OPO, OPO and OPA, narrow bandwidth laser seeded and pulsed Nd：YAG laser transmitting fundamental frequency, a dual-channel wavelength meter with high accuracy and frequency stability etc, which can output alternately dual-wavelength laser beams at 1.572 μm. After the system is debugged preliminarily, the conversion efficiency near 25% is obtained when the pump pulse energy is 326 m J, and pulse energy is near 80 m J, which can meet the need of ground-based differential absorption lidar measurements of CO2 concentration profiles in troposphere
出处
《量子电子学报》
CAS
CSCD
北大核心
2017年第1期72-75,共4页
Chinese Journal of Quantum Electronics
基金
国家自然科学基金,41575032,41127901~~
关键词
非线性光学
光参量振荡
近红外双波长
差分吸收激光雷达
CO2
nonlinear optics
optical parametric oscillation
near infrared dual-wavelength
differentialabsorption lidar
carbon dioxide
