In this Letter, we demonstrated the switchable single- and dual-wavelength femtosecond soliton generation in single-mode Er-doped fiber lasers with the usage of carboxyl-functionalized graphene oxide (GO-COOH) saturable absorbers (SAs) for the first time,
研究气溶胶辐射强迫和激光大气传输效应,需要掌握气溶胶光吸收特性参数及其垂直分布情况。提出一种基于实测与模式相结合的方法来估测垂直高度上气溶胶吸收系数分布。首先采用太阳辐射计和激光雷达观测的数据分别反演整层气溶胶光学厚度(AOD)和消光廓线,再将辐射传输计算软件moderate spectral resolution atmospheric transmittance algorithm and c