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Title: Saturated CO{sub 2} absorption near 1.6 μm for kilohertz-accuracy transition frequencies

Doppler-free saturated-absorption Lamb dips were measured on weak rovibrational lines of {sup 12}C{sup 16}O{sub 2} between 6189 and 6215 cm{sup −1} at sub-Pa pressures using optical feedback frequency stabilized cavity ring-down spectroscopy. By referencing the laser source to an optical frequency comb, transition frequencies for ten lines of the 30013←00001 band P-branch and two lines of the 31113←01101 hot band R-branch were determined with an accuracy of a few parts in 10{sup 11}. Involving rotational quantum numbers up to 42, the data were used for improving the upper level spectroscopic constants. These results provide a highly accurate reference frequency grid over the spectral interval from 1599 to 1616 nm.
Authors:
; ; ;  [1] ;  [2] ; ;  [3]
  1. Univ. Grenoble Alpes, LIPhy, F-38000 Grenoble (France)
  2. (France)
  3. Physics Department of Politecnico di Milano and IFN-CNR, Piazza Leonardo da Vinci 32, 20133 Milano (Italy)
Publication Date:
OSTI Identifier:
22415783
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 142; Journal Issue: 19; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ABSORPTION; ABSORPTION SPECTRA; ABSORPTION SPECTROSCOPY; CARBON 12; CARBON DIOXIDE; FEEDBACK; LASER RADIATION; OXYGEN 16; QUANTUM NUMBERS; SPECTROSCOPY