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Related Experiment Video

Updated: Jun 20, 2026

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
06:16

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing

Published on: April 25, 2019

High-irradiance 248-nm laser system.

J P Roberts, A J Taylor, P H Lee

    Optics Letters
    |September 12, 2009
    PubMed
    Summary
    This summary is machine-generated.

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    Researchers developed a high-irradiance laser system producing 8 x 10^17 W/cm^2. This advanced system uses a mode-locked dye laser and KrF amplifiers for powerful, focused energy delivery.

    Area of Science:

    • * Laser Physics and Photonics
    • * High-Intensity Laser Systems

    Background:

    • * Development of advanced laser systems is crucial for scientific research.
    • * Achieving ultra-high irradiances enables novel physical investigations.

    Purpose of the Study:

    • * To describe a novel laser system capable of routinely generating ultra-high irradiances.
    • * To detail the methods for achieving high energy output and precise focusing.

    Main Methods:

    • * Utilizing a mode-locked visible dye laser as the initial pulse source.
    • * Employing heterodyning to down-convert the laser wavelength to 248 nm.
    • * Amplifying the pulses using two KrF (Krypton Fluoride) amplifiers.

    Main Results:

    • * The laser system routinely achieves irradiances of 8 x 10^17 W/cm^2.

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    Published on: April 25, 2019

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  • * Output pulse energy is 25-30 mJ with a pulse duration of 700 femtoseconds (fsec).
  • * The laser pulses can be focused to a spot size of 5 square micrometers (µm^2).

    • Conclusions:

    • * The described laser system provides a reliable source for ultra-high irradiance experiments.
    • * The system's parameters are suitable for applications requiring intense, localized energy deposition.