Abstract
A high resolution infra-red PbSe diode laser spectrometer has been developed for application in air pollution monitoring and mineral prospecting. This instrument possesses three cells for measurement and calibration. Correlation techniques have been applied to increase the sensitivity. SO2 concentrations of around 5 ppm have been monitored at 7.3μm with the diode operating at 77 K.
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References
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Max, E., Eng, S.T. A PbSe diode laser spectrometer to be used in air pollution monitoring and mineral prospecting. Opt Quant Electron 9, 411–418 (1977). https://doi.org/10.1007/BF00620224
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DOI: https://doi.org/10.1007/BF00620224