Vol. 35, Issue 1, pp. 49-57

Vol. 35 Issue 1 pp. 49-57

Highly sensitive diode laser absorption measurements of CO2 near 1.57 μm at room temperature

Jie SHAO, Xiaoming GAO, Weijun ZHANG, Yiqian YUAN, Lixin NING, Yong YANG, Shixing PEI, Wei HUANG

Keywords

wavelength modulation, diode lasers, absorption spectroscopy

Abstract

The absolute absorption spectrum intensities of carbon dioxide sample have been recorded with a tunable diode laser spectrometer in the spectral range 6350–6364 cm–1, which is suitable for the in situ sensing of carbon dioxide in the lower stratosphere using a commercial telecommunication -type diode laser. It was found that the typical uncertainty of experimental line intensities is about 1% compared with the values listed in the HITRAN database, which are calculated by direct numerical diagonalization (DND).

Vol. 35
Issue 1
pp. 49-57

0.28 MB
OPTICA APPLICATA - a quarterly of the Wrocław University of Science and Technology, Faculty of Fundamental Problems of Technology