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Frequency measurements of 3 to 11 THz laser lines of CH3OH

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Abstract

We measured the frequencies of 12 far-infrared laser lines generated in a high- frequency Fabry-Perot laser cavity containing methanol, pumped by a CO2 laser. The frequencies are in the range 2.8 to 11.4 THz (105.4 to 26.2 µm). Ten of the measured frequencies are higher than 7 THz, and help to fill the laser frequency gaps in this region. Five of the measured lines are new. The 11.4 THz line has the highest frequency of an optically pumped laser ever measured with the CO2 laser heterodyne technique.

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Author notes

  1. S. C. Zerbetto & E. C. C. Vasconcellos

    Present address: Instituto de Física "Gleb Wataghin," Departamento de Eletrônica Quântica, UNICAMP, 13083-970, Campinas, SP, Brazil

Authors and Affiliations

  1. National Institute of Standards and Technology, Time and Frequency Division, 325 Broadway, 80303-3328, Boulder, CO, USA

    S. C. Zerbetto, L. R. Zink, K. M. Evenson & E. C. C. Vasconcellos

  2. Cooperative Institute for Research in Environmental Sciences, University of Colorado and NOAA, 80303-3328, Boulder, CO, USA

    L. R. Zink

Authors
  1. S. C. Zerbetto
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  2. L. R. Zink
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  3. K. M. Evenson
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  4. E. C. C. Vasconcellos
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Additional information

This work has been financed by the Brazilian Government - Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), and by the United States Government - NASA Grant W-18, 623.

Contribution of NIST, not subject to U.S. Copyright.

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Zerbetto, S.C., Zink, L.R., Evenson, K.M. et al. Frequency measurements of 3 to 11 THz laser lines of CH3OH. Int J Infrared Milli Waves 17, 1049–1054 (1996). https://doi.org/10.1007/BF02101436

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  • DOI: https://doi.org/10.1007/BF02101436

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