Observation and assignment of D/sub 2//sup 18/O FIR laser lines optically pumped by a waveguide CO/sub 2/ laser

By means of a detailed analysis of the v/sub 2/ infrared band of D/sub 2//sup 18/O, it has been possible to assign most of the FIR emissions reported in the literature. Moreover, two FIR laser lines which fall in the range of tunability of the CW waveguide CO/sub 2/ laser have been predicted and observed. The frequency of the stronger line was measured and found to be 2611.4185(10) GHz, thus filling a gap in the presently available comb of FIR laser lines whose frequencies have been measured. The wavelength precision of the assigned lines was improved by about two orders of magnitude.<
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