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Updated: Jun 22, 2026

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
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In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

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Glass micro-fibers for efficient third harmonic generation.

Victor Grubsky, Arthur Savchenko

    Optics Express
    |June 6, 2009
    PubMed
    Summary
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    We developed a theory for third-harmonic generation in optical waveguides. Our micro-fiber design enables efficient third-harmonic radiation from infrared lasers using short fiber lengths.

    Area of Science:

    • Nonlinear Optics
    • Photonics
    • Materials Science

    Background:

    • Third-harmonic generation (THG) is a key nonlinear optical process.
    • Efficient THG typically requires long interaction lengths or specific phase-matching conditions.
    • Optical waveguides offer enhanced light-matter interaction for nonlinear processes.

    Purpose of the Study:

    • To develop a rigorous theoretical framework for THG in optical waveguides.
    • To design a practical micro-fiber waveguide for efficient THG.
    • To demonstrate high conversion efficiency for THG from infrared lasers.

    Main Methods:

    • Theoretical modeling of THG in optical waveguides.
    • Design and simulation of micro-fiber waveguides for phase-matching and mode overlap.

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    Published on: May 27, 2013

    Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
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  • Analysis of conversion efficiency using typical laser sources.

    • Main Results:

    • A rigorous theory for THG in optical waveguides is established.
    • Micro-fiber waveguides with diameters near half the fundamental wavelength enable phase-matching and efficient mode overlap.
    • High THG conversion efficiency is predicted in centimeter-scale micro-fibers.

    Conclusions:

    • Micro-fiber waveguides are a promising platform for efficient THG.
    • The developed theory provides a pathway for designing optimized nonlinear optical devices.
    • Efficient generation of third-harmonic radiation from infrared lasers is achievable with this approach.