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A stable submillimeter laser local oscillator for heterodyne radiometry and spectroscopy

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Abstract

A submillimeter laser with off-axis pump beam injection is described. This design concept achieves complete isolation of the pump laser with respect to the pump radiation reflected from the smm resonator. Active line independent stabilization of the pump laser is obtained by the use of an external tunable etalon as a frequency reference. The smm output power is constant to within 4% over periods of hours. Mean frequency drifts of less than 2 parts in 108 per minute were measured by mixing with very high harmonics of an X-band synthesizer in a planar Schottky diode.

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References

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Authors and Affiliations

  1. Phoenix Corporation, 1700 Old Meadow Road, 22102, McLean, Virginia

    Gerhard A. Koepf Ph.D.

  2. Lincoln Laboratory, Massachusetts Institute of Technology, 02173, Lexington, massachusetts

    H. R. Fetterman

  3. NASA Goddard Space Flight Center, 20771, Greenbelt, Maryland

    Nelson McAvoy

Authors
  1. Gerhard A. Koepf Ph.D.
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  2. H. R. Fetterman
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  3. Nelson McAvoy
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Additional information

Supported in part by NSF

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Koepf, G.A., Fetterman, H.R. & McAvoy, N. A stable submillimeter laser local oscillator for heterodyne radiometry and spectroscopy. Int J Infrared Milli Waves 1, 597–607 (1980). https://doi.org/10.1007/BF01013470

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  • DOI: https://doi.org/10.1007/BF01013470

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