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Characteristics of OpAmp

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On-chip 7 GHz acousto-optic modulators for visible wavelengths.

Ji-Zhe Zhang, Yu Zeng, Qing Qin

|August 13, 2025

Summary

This summary is machine-generated.

A novel chip-integrated acousto-optic phase modulator for visible light was created. This compact device offers efficient modulation and stability, opening new avenues for photonic and quantum technologies.

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Published on: July 25, 2022

Area of Science:

Photonics and Materials Science
Quantum Technologies

Background:

Acousto-optic modulators are crucial for light manipulation.
Developing compact and stable modulators for visible light is challenging.
Integration with quantum platforms requires efficient, high-frequency devices.

Purpose of the Study:

To develop a chip-integrated acousto-optic phase modulator optimized for visible wavelengths.
To leverage the lithium niobate on sapphire platform for enhanced device performance.
To explore high-frequency acoustic wave interactions for advanced modulation behaviors.

Main Methods:

Fabrication of a compact (200 micrometers) modulator on a lithium niobate on sapphire platform.
Excitation of a 7 GHz surface acoustic wave using an interdigital transducer, aligned perpendicular to the waveguide.
Characterization of phase modulation efficiency and single-sideband modulation behaviors at visible wavelengths.

Main Results:

Achieved efficient phase modulation of visible light in a compact device.
Demonstrated high stability due to a simple, unsuspended structure, facilitating easy fabrication.
Observed pronounced single-sideband modulation, indicative of phase delay effects in acousto-optic interactions at high frequencies.

Conclusions:

The developed acousto-optic phase modulator is suitable for visible light applications.
The device's performance highlights the significance of phase delay effects in acousto-optic interactions.
This technology presents new opportunities for visible photonic devices and integration with quantum platforms, including atom and ion-based systems.