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Related Experiment Video

Updated: Jun 15, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Gasdynamic light guide: high power density transmission measurements.

D W Bogdanoff

    Applied Optics
    |March 18, 2010
    PubMed
    Summary

    This study shows a novel gas nozzle can trap and guide light without performance loss, even at high power densities. This optical trapping device demonstrates high transmission efficiency for laser applications.

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    Vortex gas lens.

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    Optical quality of supersonic jets of various gases.

    Applied optics·2010
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    Gasdynamic light guide: high power density transmission measurements; errata.

    Applied optics·2010
    Same author

    Gasdynamic light guide.

    Applied optics·2010
    Same author

    Gasdynamic lightguide with high optical quality.

    Applied optics·1985

    Area of Science:

    • Optics and Photonics
    • Fluid Dynamics
    • Plasma Physics

    Background:

    • Refractive-index gradients in gas flows can create light-guiding regions.
    • Convergent-divergent nozzles with specific geometries can manipulate these gradients.

    Purpose of the Study:

    • To investigate the light-trapping and guiding capabilities of a radial flow nozzle.
    • To measure the transmission characteristics of the device at high optical power densities.

    Main Methods:

    • A 90-degree radial flow convergent-divergent nozzle with a 7.6 cm throat radius was used.
    • Nitrogen gas at 30-100 atm supply pressure was employed.
    • Transmission was measured at optical power densities up to 3 x 10^8 W/cm^2.

    Main Results:

    • No reduction in light transmission was observed up to 3 x 10^8 W/cm^2.
    • The average power density within the light-guiding region reached 10^7 W/cm^2.
    • Maximum measured transmission was 99.8 +/- 1.0%.

    Conclusions:

    • The investigated nozzle effectively traps and guides light.
    • The device exhibits high-efficiency light transmission with no power-induced degradation.
    • This technology shows promise for high-power optical systems.

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    Last Updated: Jun 15, 2026

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