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Observation of electro-activated localized structures in broad area VCSELs.

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    We show how to electrically activate a localized optical structure in a vertical-cavity surface-emitting laser (VCSEL) below threshold. This control uses electro-optic steering of a writing beam via a photorefractive waveguide switch.

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    Area of Science:

    • Optoelectronics
    • Laser Physics
    • Nonlinear Optics

    Background:

    • Vertical-cavity surface-emitting lasers (VCSELs) are key optoelectronic devices.
    • Controlling localized optical structures in lasers below threshold is challenging.
    • Photorefractive materials offer unique light-制御 capabilities.

    Purpose of the Study:

    • To demonstrate experimental electro-activation of localized optical structures in a broad-area VCSEL.
    • To achieve precise control over optical structures using electro-optic steering.
    • To explore the use of photorefractive funnel waveguides for beam manipulation.

    Main Methods:

    • Experimental setup involving a coherently driven broad-area VCSEL below threshold.
    • Utilizing an electro-optically steerable writing beam.
    • Employing a pre-programmable switch based on a photorefractive funnel waveguide.

    Main Results:

    • Successful demonstration of electro-activation of a localized optical structure.
    • Precise control over the optical structure was achieved via beam steering.
    • The photorefractive funnel waveguide effectively guided the writing beam.

    Conclusions:

    • Electro-activation provides a novel method for controlling optical structures in VCSELs.
    • The demonstrated technique offers a pathway for reconfigurable optoelectronic devices.
    • Photorefractive waveguides are viable components for advanced laser control systems.