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Waveguide mutually pumped phase conjugators.

S W James, K E Youden, P M Jeffrey

    Applied Optics
    |September 22, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This study demonstrates a faster phase conjugator using a waveguide in barium titanate (BaTiO3) crystals. Ion implantation significantly reduced response times, enhancing optical device performance.

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    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Photorefractive materials like barium titanate (BaTiO3) are crucial for nonlinear optical applications.
    • Phase conjugation offers unique light manipulation capabilities.
    • Bulk BaTiO3 devices often face limitations in response speed.

    Purpose of the Study:

    • To investigate the performance of a bridge mutually pumped phase conjugator in a planar waveguide structure.
    • To evaluate the impact of ion implantation on the response time of photorefractive waveguides.
    • To explore the potential of waveguide structures for improved optical device efficiency.

    Main Methods:

    • Fabrication of a planar waveguide in BaTiO3 using 1.5-MeV H+ ion implantation at a dose of 10(16) ions/cm(2).
    • Experimental setup for a bridge mutually pumped phase conjugator utilizing the fabricated waveguide.
    • Measurement and comparison of response times in the waveguide versus bulk crystals.

    Main Results:

    • Successful operation of the bridge mutually pumped phase conjugator within the ion-implanted BaTiO3 waveguide.
    • Observed an order of magnitude decrease in response time compared to bulk BaTiO3.
    • Attributed the speed enhancement to optical confinement and modified charge transport.

    Conclusions:

    • Planar waveguides fabricated by ion implantation offer significantly reduced response times for phase conjugation.
    • Optical confinement and altered charge transport properties are key factors in the observed speed improvement.
    • Ion-implanted BaTiO3 waveguides present a promising platform for advanced photonic devices requiring fast optical responses.