Estimation of various atmospheric constituent measurements by usingsolid state tunable lasers

摘要

Detectivities of differential absorption lidar (DIAL) using solidstate lasers have been evaluated. Harmonic-generation and mixing of aTi:Al₂O₃ laser and a Nd:YAG laser was consideredas a light source, because of its wide-range wavelength tunability fromultraviolet to infrared. Twelve gases were selected for the evaluationsbecause of their importance for the global environment, atmosphericpollution, and industrial gas leakage. As a result, detection limits ofH₂O, CH₄, and NO₂ were 4.2 km, 4.1 km,and 1.8 km for average atmospheric concentrations, assuming that S/N=10is the limit