Spectroscopy of water vapor in the 930 nm to 960 nm spectral region

Summary form only given. A new laser is being developed for the LASE (Lidar Atmospheric Sensing Experiment) system around 946 nm. We have modified a system that characterizes water vapor in the 930-960 nm region of the spectrum for pressure shifts, broadening coefficients and cross-sections. The relative wavelength scale for each scan is determined with a Fabry Perot etalon and White cells with an adjustable pathlength up to 120 meters are used to measure pressure shifts.