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Sub-optical wavelength acoustic wave modulation of integrated photonic resonators at microwave frequencies

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  • Semere Ayalew Tadesse

    (University of Minnesota
    School of Physics and Astronomy, University of Minnesota)

  • Mo Li

    (University of Minnesota)

Abstract

Light–sound interactions have long been exploited in various acousto-optic devices based on bulk crystalline materials. Conventionally, these devices operate in megahertz frequency range where the acoustic wavelength is much longer than the optical wavelength and a long interaction length is required to attain significant coupling. With nanoscale transducers, acoustic waves with sub-optical wavelengths can now be excited to induce strong acousto-optic coupling in nanophotonic devices. Here we demonstrate microwave frequency surface acoustic wave transducers co-integrated with nanophotonic resonators on piezoelectric aluminum nitride substrates. Acousto-optic modulation of the resonance modes at above 10 GHz with the acoustic wavelength significantly below the optical wavelength is achieved. The phase and modal matching conditions in this scheme are investigated for efficient modulation. The new acousto-optic platform can lead to novel optical devices based on nonlinear Brillouin processes and provides a direct, wideband link between optical and microwave photons for microwave photonics and quantum optomechanics.

Suggested Citation

  • Semere Ayalew Tadesse & Mo Li, 2014. "Sub-optical wavelength acoustic wave modulation of integrated photonic resonators at microwave frequencies," Nature Communications, Nature, vol. 5(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6402
    DOI: 10.1038/ncomms6402
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    Cited by:

    1. I-Tung Chen & Bingzhao Li & Seokhyeong Lee & Srivatsa Chakravarthi & Kai-Mei Fu & Mo Li, 2023. "Optomechanical ring resonator for efficient microwave-optical frequency conversion," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    2. Hulin Yao & Pengcheng Zheng & Shibin Zhang & Chuanjie Hu & Xiaoli Fang & Liping Zhang & Dan Ling & Huanyang Chen & Xin Ou, 2024. "Twist piezoelectricity: giant electromechanical coupling in magic-angle twisted bilayer LiNbO3," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    3. Ji-Qian Wang & Zi-Dong Zhang & Si-Yuan Yu & Hao Ge & Kang-Fu Liu & Tao Wu & Xiao-Chen Sun & Le Liu & Hua-Yang Chen & Cheng He & Ming-Hui Lu & Yan-Feng Chen, 2022. "Extended topological valley-locked surface acoustic waves," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    4. Seong Won Lee & Jong Seok Lee & Woo Hun Choi & Daegwang Choi & Su-Hyun Gong, 2024. "Ultra-compact exciton polariton modulator based on van der Waals semiconductors," Nature Communications, Nature, vol. 15(1), pages 1-7, December.
    5. Dominik D. Bühler & Matthias Weiß & Antonio Crespo-Poveda & Emeline D. S. Nysten & Jonathan J. Finley & Kai Müller & Paulo V. Santos & Mauricio M. Lima & Hubert J. Krenner, 2022. "On-chip generation and dynamic piezo-optomechanical rotation of single photons," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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