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Ion implanted optical waveguides in nonlinear optical organic crystal.

Lukas Mutter, Andrea Guarino, Mojca Jazbinsek

    Optics Express
    |June 18, 2009
    PubMed
    Summary

    Researchers achieved optical waveguiding in organic crystals using ion implantation. This novel method creates a refractive index barrier in nonlinear optical crystals like DAST for guiding light.

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    Area of Science:

    • Materials Science
    • Optics
    • Crystallography

    Background:

    • Organic crystals possess unique nonlinear optical properties.
    • Controlling light propagation within materials is crucial for optical devices.
    • Ion implantation is a technique used for material modification.

    Purpose of the Study:

    • To demonstrate optical waveguiding in an organic crystal using ion implantation.
    • To investigate the creation of a refractive index barrier in DAST crystals.
    • To characterize the refractive index changes and waveguide properties.

    Main Methods:

    • Utilized H+ ion implantation to modify the refractive index of DAST crystals.
    • Measured refractive index changes as a function of depth and ion fluence.
    • Fabricated planar waveguides by polishing and employed end-fire coupling for demonstration.

    Main Results:

    • Achieved a refractive index barrier suitable for optical waveguiding in DAST.
    • Measured maximal refractive index changes of -0.2 at 633nm and -0.1 at 810nm.
    • Demonstrated planar waveguiding with measured losses of approximately 7 dB/cm at 1.57µm.

    Conclusions:

    • Ion implantation is a viable method for creating optical waveguides in organic nonlinear crystals.
    • The study provides a new approach for fabricating optical components in DAST.
    • Further research can optimize ion implantation parameters for improved waveguide performance.