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    Area of Science:

    • Photonics
    • Optical Engineering
    • Materials Science

    Background:

    • Integrated optical phased arrays (OPAs) are crucial for beam manipulation.
    • Existing OPA systems often lack visible-spectrum capabilities.
    • Controlling multiple colors simultaneously presents a significant challenge.

    Purpose of the Study:

    • To design and demonstrate the first integrated OPA system for simultaneous control of red, green, and blue light beams.
    • To develop a visible-spectrum-spanning OPA architecture and requisite devices.
    • To enable new applications requiring visible light operation.

    Main Methods:

    • Developed a novel integrated OPA system architecture.
    • Fabricated the system using a 300-mm wafer-scale silicon photonics foundry process.
    • Experimentally demonstrated simultaneous 2D beam steering across red, green, and blue wavelengths.

    Main Results:

    • Successfully designed and fabricated an integrated OPA system operating across the visible spectrum.
    • Achieved simultaneous 2D beam steering for red, green, and blue light.
    • Demonstrated the system's capability by displaying a 2D RGB image of the MIT logo.

    Conclusions:

    • This work presents the first integrated OPA system capable of simultaneous visible light beam emission and control.
    • The developed technology opens possibilities for visible-spectrum OPAs in displays, 3D printing, and optical communications.
    • Enables advancements in atomic quantum systems, underwater optical communications, and optogenetics.