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利用 Nd:YAG四倍频激光抽运氘气 (D2 )的受激拉曼效应 ,获得一阶斯托克斯 (Stokes)波长2 89nm。通过改变拉曼介质 D2 气压与抽运光能量 ,获得了一阶斯托克斯输出的较佳条件。该波长与 Xe Cl准分子激光波长 30 8nm采用差分吸收方法 ,建立了用于对流层臭氧探测的激光雷达 ,并初步获得了对流层大气臭氧的垂直分布及其时间变化特征。
A first-order Stokes wavelength of 2 89 nm was obtained by pumping the excited Raman effect of deuterium gas (D2) by a Nd: YAG quadruple-frequency laser. By changing Raman medium D2 pressure and pump energy, the first order Stokes output is obtained. The wavelength and the Xe Cl excimer laser wavelength of 30 8 nm were determined by differential absorption method. The lidar used for tropospheric ozone detection was established and the vertical distribution and temporal variation of atmospheric ozone in the troposphere were obtained.