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Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
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Fluoroform-d optically pumped submillimeter-wave laser.

M S Tobin, R D Felock

    Optics Letters
    |August 21, 2009
    PubMed
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    Submillimeter-wave laser action was achieved in deuterated fluoroform (CDF3) for the first time. Researchers observed 27 laser lines, with 10 lines producing near-milliwatt continuous-wave power.

    Area of Science:

    • Quantum optics
    • Molecular spectroscopy
    • Laser physics

    Background:

    • Deuterated fluoroform (CDF3) is a molecule with potential applications in laser technology.
    • Submillimeter-wave (SMMW) lasers are crucial for various scientific applications, including spectroscopy and atmospheric sensing.
    • Previous research has not reported SMMW laser action in CDF3.

    Purpose of the Study:

    • To report the first observation of submillimeter-wave laser action in deuterated fluoroform (CDF3).
    • To characterize the observed laser lines and their power output.
    • To provide tentative spectroscopic assignments for the strongest laser lines.

    Main Methods:

    • Pumping CDF3 gas with various carbon dioxide (CO2) laser lines in the 9- and 10-micrometer regions.

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  • Utilizing a non-optimized hole-coupled metallic-waveguide resonator to generate and sustain laser action.
  • Observing and analyzing the emitted submillimeter-wave laser lines.

    • Main Results:

    • Successfully generated submillimeter-wave laser action in CDF3.
    • Observed a total of 27 distinct laser lines.
    • Achieved near-milliwatt-level continuous-wave (cw) power on 10 of the observed lines.
    • Made tentative spectroscopic assignments for the strongest lines, aiding in understanding the underlying molecular transitions.

    Conclusions:

    • Submillimeter-wave laser action in deuterated fluoroform is feasible and has been demonstrated.
    • The results open possibilities for new SMMW laser sources based on CDF3.
    • Further spectroscopic investigations can refine assignments and optimize laser performance.