Abstract.
By optically pumping the deuterated isotopomers of 14NH3 and 15NH3 using 12C16O2, 13C16O2, 12C18O2, and 13C18O2 lasers, several new far-infrared (FIR) emission lines between 65 μm and 125 μm have been detected. The existing spectroscopy of 14N-ammonia isotopomers has been used to identify many of these lines, as well as some previously observed but unidentified. The spectroscopic data have been analyzed to predict over 20 additional FIR laser lines that could be pumped by a more capable CO2 laser. This effort was motivated by a need for strong laser lines in frequency coincidence with molecular transitions of astrophysical interest. Of particularnote is the measurement of the 2680-GHz line of 14NHD2, whose frequency is 4.9 GHz higher than that of the important J=1-0 line of interstellar HD.
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Received: 25 July 2002 / Published online: 20 December 2002
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Boreiko, R., Betz, A. Far-infrared laser emission from deuterated ammonia . Appl Phys B 75, 823–826 (2002). https://doi.org/10.1007/s00340-002-1062-x
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DOI: https://doi.org/10.1007/s00340-002-1062-x