Abstract
It is shown that for certain optically excited symmetric top molecules which lase in the far-infrared that it is possible to increase their lasing efficiency through resonant pumping of the higher k quantum number transitions which have increased statistical weights due to increased molecular symmetry.
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Barkley, H.J., Sharp, L.E. Improving the efficiency of certain optically pumped lasers. Int J Infrared Milli Waves 5, 705–715 (1984). https://doi.org/10.1007/BF01009603
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DOI: https://doi.org/10.1007/BF01009603