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Safe Experimentation in Optical Levitation of Charged Droplets Using Remote Labs
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Cloud clearing with a CO(2) laser in a cirrus cloud simulation facility.

A P Waggoner, L F Radke, V Buonadonna

    Applied Optics
    |August 25, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Pulsed carbon dioxide (CO(2)) laser energy can effectively clear ice crystal clouds, similar to cirrus clouds. The cleared atmospheric channel resists recondensation, even at high ice particle concentrations.

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    Last Updated: Jun 9, 2026

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

    Published on: April 25, 2019

    Area of Science:

    • Atmospheric Science
    • Cloud Physics
    • Laser Remote Sensing

    Background:

    • Cirrus clouds, composed of ice crystals, significantly impact Earth's radiation budget.
    • Understanding cloud dissipation mechanisms is crucial for weather and climate modeling.
    • Previous research suggested potential for laser-induced cloud modification.

    Purpose of the Study:

    • To experimentally verify the prediction that pulsed carbon dioxide (CO(2)) lasers can dissipate ice crystal clouds.
    • To investigate the resistance of laser-cleared channels to recondensation.
    • To determine the effective laser energy density for cloud clearing.

    Main Methods:

    • Utilized a specialized cloud-generating apparatus with a low-speed wind tunnel.
    • Generated ice crystal clouds via ice nucleus seeding at temperatures down to -40°C.
    • Exposed clouds to pulsed CO(2) laser energy densities ranging from 0.2 to 1.5 J/cm(2).

    Main Results:

    • Observed significant clearing of ice crystal clouds at the tested laser fluences.
    • Demonstrated that the cleared channel remained clear and resisted recondensation.
    • Recondensation was dependent on ice particle mass concentration, with no recondensation observed at cirrus-like concentrations.

    Conclusions:

    • Pulsed CO(2) lasers offer a viable method for dissipating ice crystal clouds.
    • The cleared atmospheric channels exhibit resilience against recondensation, particularly at cirrus cloud particle densities.
    • This technology holds potential for weather modification applications.