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Investigation of nitric oxide and nitrous oxide optoelectronic sensors is described. The detection of both components was done by measurement of absorption that occurs due to transition between vibronic molecular transitions. The improvement of the sensitivity was achieved due to application of cavity enhanced absorption spectroscopy. Two optical cavities (each one for each gas) built of high reflectance...
Application of quantum cascade lasers in NO and N_2O sensor is described. Cavity enhanced absorption spectroscopy was used for this purpose. The detection was performed at vibronic molecular transitions in spectral regions of 5.23-5.29 μm and 4.46-4.54 μm for NO and N_2O, respectively. In order to avoid interferences by the gases contained in atmosphere (H_2O, CO_2) the lines of 5.263 μm for NO and...
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