光学学报, 2002, 22 (2): 238, 网络出版: 2006-08-08
激光长程吸收光谱法测量高分辨率大气吸收光谱
The High Resolution Absorption Spectra of Atmosphere Measured by Laser Long Path Absorption Spectroscopy
大气吸收光谱 光谱测量方法 高分辨率光谱 atmospheric absorption spectroscopy spectroscopy measurement high-resolution spectroscopy
摘要
用脉冲可调谐光参量振荡器作光源,使用光程长达1 km的8m长吸收池,采用分时复用的单探测器探测方法,组成测量系统,测量了一系列高分辨率的模拟和实际大气的吸收光谱.系统的灵敏度为0.5×10-6 cm-1??,分辨率为0.02 cm-1.1.315 μm附近实际大气的吸收光谱与HITRAN96模拟结果比较,强线符合得很好.水汽光谱的大多数强线的分子线强度相对误差在10%以下.
Abstract
The high-resolution absorption spectra of real and simulated atmosphere were recorded by using an experimental system, which includes a tunable pulsed OPO, an 8 m base-length white cell with optical length of 1 km, and a time-division multiplexing detector system. The sensitivity is 0.5×10 -6 cm -1 and resolving power is 0.02 cm -1. The high-resolution absorption spectra of real atmosphere near 1.315 μm have been measured and compared with the simulated spectra according to HITRAN 96 database. The strong lines of water vapor molecule fit very well and the relative errors of molecular line intensity of the most strong lines are less than 10%.
邬承就, 魏合理, 袁怿谦, 马志军, 曹百灵, 龚知本. 激光长程吸收光谱法测量高分辨率大气吸收光谱[J]. 光学学报, 2002, 22(2): 238. 邬承就, 魏合理, 袁怿谦, 马志军, 曹百灵, 龚知本. The High Resolution Absorption Spectra of Atmosphere Measured by Laser Long Path Absorption Spectroscopy[J]. Acta Optica Sinica, 2002, 22(2): 238.
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