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Propagation of Waves01:07

Propagation of Waves

When a wave propagates from one medium to another, part of it may get reflected in the first medium, and part of it may get transmitted to the second medium. In such a case, the interface of the two mediums can be considered as a boundary that is neither fixed nor free.
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Updated: Jun 16, 2026

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

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High power laser propagation.

F G Gebhardt

    Applied Optics
    |February 19, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Atmospheric effects like turbulence and scattering impact high power laser beams. Mid-infrared wavelengths are favored for atmospheric laser applications due to reduced scattering and turbulence effects.

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    Area of Science:

    • Atmospheric optics
    • Laser physics
    • High power laser applications

    Background:

    • High power laser beams face atmospheric challenges including absorption, scattering, turbulence, thermal blooming, and gas breakdown.
    • These effects are crucial for selecting optimal laser systems for various applications.

    Purpose of the Study:

    • To analyze the interplay of atmospheric effects on high power laser propagation.
    • To determine the optimal laser wavelength and temporal mode for high power atmospheric applications.

    Main Methods:

    • Utilized simplified models to investigate atmospheric effects on laser beams.
    • Evaluated laser performance at seven wavelengths (0.34 µm to 10.6 µm) under sea-level conditions.

    Main Results:

    • Mid-infrared (mid-IR) wavelengths are advantageous under typical turbulence and aerosol scattering conditions.
    • At 10.6 µm, thermal blooming dominates due to molecular absorption.
    • Shorter wavelengths are significantly affected by turbulence-induced spreading and aerosol interactions.

    Conclusions:

    • Laser wavelength selection is critical for mitigating atmospheric propagation losses.
    • Mid-IR lasers offer superior performance for high power atmospheric applications by balancing various detrimental effects.