Development of Coherent 2-μm Differential Absorption and Wind Lidar with laser frequency offset locking technique and column-integrated CO_2 measurement

摘要

A coherent 2-μm differential absorption and wind lidar with laser offset locking technique was developed to make long-range CO_2 measurement. The laser frequency offset technique can be set in the range of 2.5 to 6.5 GHz and it enabled to make long-range horizontal and vertical CO_2 measurements. Experimental slant and vertical measurements were carried out to investigate XCO_2 in February 2010.