Directional emission in an on-chip acoustic waveguide

Integrated acoustic circuits leverage guided acoustic waves for applications ranging from radio frequency filters to quantum state transfer, biochemical sensing, and nanomechanical computing. In many applications, it is desirable to have a method for unidirectional acoustic wave emission. In this wo...

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Bibliographic Details
Published in:Applied physics letters 2024-01, Vol.124 (1)
Main Authors: Hirsch, T. M. F., Mauranyapin, N. P., Romero, E., Jin, X., Harris, G., Baker, C. G., Bowen, W. P.
Format: Article
Language:English
Subjects:
Acoustic emission
Acoustic waveguides
Applied physics
Circuits
Crosstalk
Electromagnetic wave filters
Frequency filters
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Summary:Integrated acoustic circuits leverage guided acoustic waves for applications ranging from radio frequency filters to quantum state transfer, biochemical sensing, and nanomechanical computing. In many applications, it is desirable to have a method for unidirectional acoustic wave emission. In this work, we demonstrate directional emission in an integrated single-mode, on-chip membrane waveguide, demonstrating over 99.9% directional suppression and reconfigurable directionality. This avoids both loss and unwanted crosstalk, allowing the creation of more complex and compact phononic circuits.
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0180794