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All-optical deflection and splitting by second-order cascading.

Solomon M Saltiel, Yuri S Kivshar

    Optics Letters
    |November 21, 2007
    PubMed
    Summary
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    We discovered a new second-order cascading process that splits cross-polarized signals with over 100% efficiency. This method utilizes simultaneous phase matching in two-dimensional nonlinear photonic crystals for efficient light manipulation.

    Area of Science:

    • Nonlinear optics
    • Photonics

    Background:

    • Second-order nonlinear optical processes are crucial for light manipulation.
    • Cascading effects in nonlinear media can lead to complex phenomena.

    Purpose of the Study:

    • To describe a novel second-order cascading process.
    • To demonstrate signal splitting with efficiency exceeding 100%.

    Main Methods:

    • Utilizing simultaneous phase matching of two second-order parametric interactions.
    • Employing two-dimensional nonlinear photonic crystals.

    Main Results:

    • Achieved signal splitting with cross-polarized signals and pump.
    • Demonstrated efficiency greater than 100%.

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    Conclusions:

    • The described second-order cascading process offers a new method for efficient light splitting.
    • Two-dimensional nonlinear photonic crystals provide a viable platform for achieving the required phase matching conditions.