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Related Experiment Video

Updated: Dec 27, 2025

Characterization of Anisotropic Leaky Mode Modulators for Holovideo
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Surface-emitting electroholographic SAW modulator.

Joy C Perkinson, Michael G Moebius, Elizabeth J Brundage

    Optics Express
    |March 4, 2020
    PubMed
    Summary
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    Researchers developed a novel surface-emitting surface acoustic wave (SAW) acousto-optical modulator that acts as a linear hologram. This integrated device, fabricated with lithographic techniques, enables holographic display applications.

    Area of Science:

    • Photonics and Acousto-optics
    • Materials Science (Lithium Niobate)
    • Integrated Optics

    Background:

    • Surface acoustic wave (SAW) devices are utilized in various signal processing applications.
    • Acousto-optic modulation is a key technique for controlling light with sound waves.
    • Holographic displays require efficient and controllable methods for generating holographic patterns.

    Purpose of the Study:

    • To design and demonstrate a novel surface-emitting SAW acousto-optical modulator.
    • To integrate optical waveguide, transducer, and grating functionalities onto a single substrate.
    • To explore the modulator's capability to function as a linear hologram for display applications.

    Main Methods:

    • Fabrication of a monolithically-integrated device on a lithium niobate substrate using lithographic techniques.

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  • Integration of an optical waveguide, a surface acoustic wave transducer, and an out-coupling surface grating.
  • Application of electronic waveforms to generate and load a 9-region linear hologram into the modulator's interaction region.

    • Main Results:

    • Successful design and operation of a cm-scale surface-emitting SAW acousto-optical modulator.
    • Demonstration of the modulator behaving as a linear hologram under applied electronic waveforms (280-320 MHz).
    • Achieved monolithic integration of all necessary components on a lithium niobate substrate.

    Conclusions:

    • This work presents the first demonstration of a monolithically-integrated, surface-emitting SAW modulator fabricated using lithographic techniques.
    • The developed modulator shows potential for practical implementations in holographic display technologies.
    • The device offers a new pathway for acousto-optic light manipulation and holographic pattern generation.