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Related Experiment Video

Updated: Jun 20, 2026

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
09:38

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

Published on: December 18, 2015

Efficient far-infared laser lines from CH(2)F(2) pumped by a continuous-wave waveguide CO(2) laser.

G Merkle, J Heppner

    Optics Letters
    |September 2, 2009
    PubMed
    Summary

    Researchers discovered six new far-infrared laser lines in difluoromethane (CH2F2) using a tunable carbon dioxide laser. Two lines exhibit strengths comparable to the strongest known transitions in CH2F2.

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    Area of Science:

    • Spectroscopy
    • Quantum Optics
    • Molecular Physics

    Background:

    • Difluoromethane (CH2F2) is a molecule with potential applications in laser technology.
    • Previous studies have identified far-infrared (FIR) laser lines in CH2F2, but further exploration is needed.

    Purpose of the Study:

    • To quantitatively measure absorption in CH2F2 near specific carbon dioxide (CO2) laser lines.
    • To discover and characterize new far-infrared laser lines in CH2F2.

    Main Methods:

    • Quantitative absorption measurements were performed on CH2F2.
    • A 300-MHz tunable-waveguide CO2 laser was employed for excitation.
    • The spectral region near the 9-micrometer P-branch of the CO2 laser was investigated.

    Main Results:

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    Last Updated: Jun 20, 2026

    Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
    09:38

    Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

    Published on: December 18, 2015

    Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
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    • Six new far-infrared laser lines were observed in CH2F2.
    • Two of the newly identified lines possess strengths comparable to the strongest reported transitions in CH2F2.
    • Four of the six new lines have been successfully assigned to specific molecular transitions.

    Conclusions:

    • The study expands the known spectrum of laser transitions in CH2F2.
    • The strong intensity of some new lines suggests potential for improved laser performance or new applications.
    • Further assignments of the remaining lines will enhance understanding of CH2F2 spectroscopy.