Remote detection and identification of CO2 dissolved in water using a raman lidar system

Abstract

We demonstrated the first range-resolved detection and identification of CO2 dissolved in water by Raman lidar. A frequency doubled Q-switched neodymium-doped yttrium aluminum garnet (Nd:YAG) laser (532 nm) is used as the lidar light source, and the Raman signals at ̃1273 and ̃1380 cm -1 from CO2 dissolved in water were detected. In lidar application, CO2 dissolved in water was identified in glass bottles 20m away by using the CO2 Raman band at ̃1380 cm-1. © 2011 The Japan Society of Applied Physics.