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Updated: Jun 20, 2026

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
Published on: December 18, 2015
CO(2) laser coincidences with nu(3) of SiF(4) near 9.7 microm
Abstract:
Doppler-limited tunable-diode laser spectra of the stretching fundamental (nu(3)) of (28)SiF(4) at 1031 cm(-1) have been analyzed and the spectroscopic constants determined. Explicit identifications have been made for transitions near CO(2) laser lines between 1023 and 1038 cm(-1); 51 such transitions have been observed in sub-Doppler saturation spectra obtained with a CO(2) laser. The closest observed coincidence is R(53) F(1)(9) of (28)SiF(4), at -1.391 MHz from (12)C(16)O(2)P(30). Implications for isotope-enrichment experiments are discussed.
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