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Updated: Jun 20, 2026
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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.
Optics Letters
|September 2, 2009
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.
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:
- 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.
