Acoustoelectric optomechanical devices
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United States of America Patent
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Jan 21, 2025
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N/A
app pub date -
Nov 30, 2022
filing date -
Nov 30, 2022
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Abstract
Devices employing Brillouin interactions that can be modified by acoustoelectric (AE) interactions, thereby enabling control over the devices' nonlinear optical susceptibility, are described. Modification of the phonon dissipation rates through application of quasistatic electric fields in the semiconductor can improve the performance of Brillouin photonic devices. These AE Brillouin interactions allow for local control of the phonon phase velocity and thus the Brillouin scattering frequencies, providing an electronic means to compensate for inhomogeneous broadening that occurs over large length scales. Moreover, these AE Brillouin interactions allow Brillouin scattering processes to employ phonon coherence lengths that can achieve parity with and even exceed those of the photons, enabling fully coherent three-wave parametric-like processes. Devices in accordance with various aspects of the present invention have simultaneously demonstrated, using these effects, both large optomechanical confinement and coupling, and AE coupling.
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