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High-resolution spectral measurements of SO2from 1176.0 to 1265.8 cm-1using a single PbSe laser with magnetic and current tuning

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3 Author(s)
Allario, F. ; NASA Langley Research Center, Hampton, VA, USA ; Bair, C. ; Butler, J.

A single magnetic- and current-tuned PbSe diode laser was used to measure completely resolved spectra of SO2at low pressures over a major portion (1176.0-1265.8 cm-1) of the R branch of the ν1band for the first time. It is shown that the combination of magnetic and current tuning allows complete coverage of this 89.8-cm-1wide spectral region. Results generally show excellent agreement with theoretically generated spectra. Magnetic-tuning rates and, with magnetic field applied, current-tuning rates were observed to be significantly nonlinear. Precise spectroscopic data could be obtained with these nonlinearities taken into account. The current-tuning rate in zero magnetic field was essentially constant over the range investigated.

Published in:

Quantum Electronics, IEEE Journal of  (Volume:11 ,  Issue: 5 )