The All-Solid-State Narrowband Lidar Developed by Optical Parametric Oscillator/Amplifier (OPO/OPA) Technology for Simultaneous Detection of the Ca and Ca+ Layers. - Lifang Du; Haoran Zheng; Chunlei Xiao; Xuewu Cheng; Fang Wu 005; Jing Jiao; Yuchang Xun; Zhishan Chen; Jiqin Wang; Guotao Yang (Remote. Sens., 2023)