Vol. 36, Issue 1, pp. 15-22

Abstract

The absolute absorption spectrum intensities of carbon dioxide sample have been recorded with a tunable diode laser spectrometer in the spectral range 6506–6520 cm^–1, which is suitable for the in situ sensing of carbon dioxide in the lower stratosphere, and were studied using a commercial telecommunication-type diode laser. The intensity of the weakest line we detected in this experiment is 9.116×10^–27 cm^–1/(molecule·cm^–2) at a pressure of 0.35 torr, and the corresponding absorption is 1.96×10^–6 with SNR of 2.67.