Development of 1.6 mu m DIAL using an OPG/OPA transmitter for measuring atmospheric CO2 concentration profiles

摘要

An experiment for the measurement of atmospheric CO2 vertical profiles up to a 7 km altitude was successfully conducted using a 1.6 mu m ground-based differential absorption Lidar developed by Tokyo Metropolitan University. To achieve a high pulse repetition rate, large power output, and high frequency stabilization, we developed a new 1.6 mu m Lidar system using an optical parametric generator (OPG) transmitter. Unlike the previous system's transmitter, OPG does not need a resonator. We amplified its output with two optical parametric amplifiers. We validated our system against an in situ sensor and found the difference between their CO2 concentration measurements to be 0.06 ppm. (C) 2017 Optical Society of America