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Related Experiment Video

Updated: Jul 2, 2026

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
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Laser pumping by PFN power source.

H Fujita1, N Banjoya, K Iba

  • 1Institute of Laser Engineering, Osaka University, Suita, Osaka 565, Japan.

The Review of Scientific Instruments
|June 1, 1978
PubMed
Summary
This summary is machine-generated.

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Pulse forming networks (PFNs) improved electron-beam-controlled CO2 laser amplifier efficiency. Matching PFN impedance to the laser gas discharge optimized energy transfer for better pumping.

Area of Science:

  • Plasma physics
  • Laser engineering
  • Energy systems

Background:

  • Electron-beam-controlled lasers require efficient power supplies for optimal performance.
  • Traditional power supplies can lead to energy loss in storage capacitors.
  • Improving energy transfer to the laser medium is crucial for amplifier efficiency.

Purpose of the Study:

  • To investigate the effectiveness of a pulse forming network (PFN) as a main discharge power supply for an electron-beam-controlled CO2 laser amplifier.
  • To enhance the utility efficiency of energy stored in capacitors.
  • To optimize energy transfer to the laser gas.

Main Methods:

  • Implemented a pulse forming network (PFN) as the primary discharge power supply.
  • Controlled the impedance of the pumping discharge through the laser gas by adjusting the electron beam's accelerating voltage.

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  • Matched the PFN line impedance with the laser gas discharge impedance.

    • Main Results:

    • Achieved a condition where all stored energy in the PFN was transferred to the laser gas.
    • Maintained a constant electric field strength optimal for laser pumping during energy transfer.
    • Demonstrated improved energy utility efficiency in the CO2 laser amplifier.

    Conclusions:

    • Pulse forming networks are effective power supplies for electron-beam-controlled CO2 laser amplifiers.
    • Impedance matching is critical for maximizing energy transfer efficiency.
    • The PFN approach enhances the overall performance and energy efficiency of laser systems.