Chalcogenide metasurface heterostructures for enhancing optomechanical interaction

Optomechanical interaction plays a more and more important role in the fields of quantum technology, information processing, and sensing, among others. Although brilliant achievements in enhancing optomechanical interaction have been made with microstructures, it is still a challenge to realize cons...

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Bibliographic Details
Published in:Optics communications 2024-07, Vol.563, p.130599, Article 130599
Main Authors: Yuan, Jin, Li, Pengteng, Zhang, Xin, Feng, Tianhua, Li, Zhaohui
Format: Article
Language:English
Subjects:
Mechanical resonances
Metasurfaces
Optical bound states in the continuum
Optomechanical interaction
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Summary:Optomechanical interaction plays a more and more important role in the fields of quantum technology, information processing, and sensing, among others. Although brilliant achievements in enhancing optomechanical interaction have been made with microstructures, it is still a challenge to realize considerable optomechanical interaction of large active regions for conventional microcavities and waveguides. In this work, we propose and demonstrate that metasurface heterostructures can enhance optomechanical interaction. By employing the optical bound states in the continuum at the wavelength of about 1500 nm and mechanical resonances at the frequency of about 7.36 GHz, the optomechanical coupling rate can be up to 1160 kHz, which is larger than that in most microstructures including microcavities and microring resonators. The proposed metasurface heterostructures consist of electron-beam resist nanowires on homogeneous chalcogenide thin films, avoiding the challenging etching of chalcogenide glass. Furthermore, we have also found that the strong optomechanical interaction is robust against the size parameters of the metasurfaces. The proposed chalcogenide metasurface heterostructures of large device areas and the friendly fabrication receipt may offer a promising platform for the study of optomechanical interaction. •Optomechanical interaction can be enhanced with metasurfaces.•Chalcogenide heterostructure metasurfaces can well confine both optical and mechanical waves.•The enhanced optomechanical interaction is robust against size parameters and fabrication imperfections.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2024.130599