Infrared microwave sideband laser spectroscopy in the CO laser region

The method of infrared microwave sideband laser spectroscopy developed by G. Magerl, et al. (ibid, vol.18, p.1214-20, 1982) for application in the 9-11- mu m region with a CO/sub 2/ laser has been extended to application in the 5-6- mu m region with a CO laser. The experimental details, performance of the system, and typical spectra are described. Frequency measurements of spectra in the 01/sup 1/1 from 00/sup 0/0 band of /sup 14/N/sub 2//sup 16/O and the 20/sup 0/ from 00/sup 0/0 band of /sup 16/O/sup 12/C/sup 32/S are compared to the results of previous precise measurements by heterodyne techniques to show that the accuracy is limited mainly by the resettability of the CO laser frequency.<
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