| 大气CO2 Raman后向散射的探测与可靠性分析 |
| |
| 引用本文： | 洪光烈,张寅超,赵曰峰,邵石生,谭锟. 大气CO2 Raman后向散射的探测与可靠性分析[J]. 量子电子学报, 2006, 23(3): 360-364 |
| |
| 作者姓名： | 洪光烈 张寅超 赵曰峰 邵石生 谭锟 |
| |
| 作者单位： | 中国科学院安徽光学精密机械研究所大气光学中心,安徽,合肥,230031;中国科学院安徽光学精密机械研究所大气光学中心,安徽,合肥,230031;中国科学院安徽光学精密机械研究所大气光学中心,安徽,合肥,230031;中国科学院安徽光学精密机械研究所大气光学中心,安徽,合肥,230031;中国科学院安徽光学精密机械研究所大气光学中心,安徽,合肥,230031 |
| |
| 摘 要： | 研究和设计了探测大气CO2浓度的Raman激光雷达,其发射机采用Nd:YAG激光的三倍频354.7 nm作为工作波长,发射的单脉冲能量60 mJ,重复频率20 Hz;接收机采用了光电倍增管(量子效率25%)和光子计数器(计数速率200MHz),探测CO2的Raman散射371.66 nm(频移1285 cm-1)信号,采用组合滤光片来抑制强的354.7 nm Mie-Rayleigh后向散射和氧气Raman后向散射375.4 nm对信号的严重干扰.主要采取排除法,检验其他波段的辐射是否被截止,实验证明回波主要是371.66 nm辐射.O2的干扰大约为CO2信号的1%.
|
| 关 键 词： | 大气光学 激光雷达 Raman散射 干扰 |
| 文章编号： | 1007-5461（2006）03-0360-05 |
| 收稿时间： | 2005-10-10 |
| 修稿时间： | 2005-11-17 |
Detection and validation of Raman backscattering CO2 in atmosphere |
| |
| HONG Guang-lie,ZHANG Yin-chao,ZHAO Yue-feng,SHAO Shi-sheng,TAN Kun. Detection and validation of Raman backscattering CO2 in atmosphere[J]. Chinese Journal of Quantum Electronics, 2006, 23(3): 360-364 |
| |
| Authors: | HONG Guang-lie ZHANG Yin-chao ZHAO Yue-feng SHAO Shi-sheng TAN Kun |
| |
| Abstract: | The design and experiment of a Raman lidar system for measurement of atmospheric CO2 are presented. 354.7 nm third harmonic of Nd:YAG laser is transmitted with 60 mJ pulse energy and repetition rate of 20 Hz. Receiver employed photomultiplier tube with quantum efficiency of 25% and 200 MHz photon counter, and it detects Raman backscat tering signal 371.66 nm (shift 1285 cm-1) from CO2. Combinatorial filter is used to reject interference presented by 354.7 nm intense Mie-Rayleigh backscattering and 375.4 nm Raman backscattering from O2 . Other wavelength radiation was excluded to enter photomultiplier tub. The interference from O2 is approximately 1% of the anticipated CO2 signal. |
| |
| Keywords: | atmospheric optics lidar Raman scattering interference |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
