High Resolution Far Infrared Spectroscopy

Far-Infrared Rotational and Fine-Structure Transition Frequencies and Molecular Constants of 14NO and 15NO in the X2Π (v = 0) State

“…A detailed description of the TuFIR spectrometer at NIST has been given elsewhere (19,20), so only a brief summary will be presented here. We generate far-infrared radiation by mixing the mid-infrared output from two frequency-locked CO 2 lasers (with frequencies 1 and 2 ) and a microwave synthesizer (with frequency MW ) on a cobalt-tungsten metal- insulator-metal (MIM) diode.…”

The isotopic dependence of the spin–rotation interaction: the rotational spectrum of cadmium hydride in its X2Σ+ state

“…A detailed description of the NIST TuFIR has been previously given [2,8], so only a brief summary will be given here. Far-infrared radiation is generated by mixing mid-infrared radiation from two frequencystabilized carbon dioxide lasers (of frequency m 1 and m 2 Þ and microwave radiation (of frequency m MW Þ on a metal-insulator-metal (MIM) diode consisting of a sharpened tungsten whisker in contact with a polished cobalt rod.…”