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Published December 1970 | Published
Journal Article Open

Spectral coincidences between emission lines of the CO laser and absorption lines of nitrogen oxides


Several spectral coincidences between carbon-monoxide laser emission lines and absorption lines of NO and N_2O_4 have been observed, and absorption measurements have been taken. These data are presented and discussed along with similar spectral coincidence observations made previously using the helium-neon and iodine lasers. Other coincidences between CO-laser lines and NO_2 absorption lines are predicted from a study of recently available high-resolution-spectroscopy literature. Due to the narrow line widths of gas-laser lines, the coincidences reported here can be applied to the selective sensing of these constituents in the atmosphere.

Additional Information

© 1970 IEEE. Manuscript received June 1970; revised August 18, 1970. This work was supported in part by the Air Force Office of Scientific Research and the California Institute of Technology, Pasadena, Calif.

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August 19, 2023
October 17, 2023