Young's double-slit experiment with anisotropic GHz surface acoustic waves on gallium arsenide
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866918091087151104 |
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| author | Steenbergen, Thomas Fisicaro, Matteo Czerniak, Krystian Rog, Matthijs Lahabi, Kaveh Löffler, Wolfgang |
| author_facet | Steenbergen, Thomas Fisicaro, Matteo Czerniak, Krystian Rog, Matthijs Lahabi, Kaveh Löffler, Wolfgang |
| contents | We demonstrate Young's double-slit experiment with GHz surface acoustic waves (SAWs) on gallium arsenide (GaAs). This experiment differs from the well-known optical case due to the anisotropy of SAW propagation on GaAs. We generate SAWs using an interdigital transducer (IDT), and the double-slit is realized by focused ion beam milled grooves which block the SAWs. We measure the out-of-plane SAW displacement with an optical scanning interferometer and apply a spatial Fourier filtering technique, enabling the observation of the two-slit interference pattern, as well as higher order diffraction and near field interference effects. We find reasonable agreement between the measured far-field interference pattern and anisotropic Huygens-Fresnel simulations based on previously reported angle-dependent SAW velocities on GaAs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_10117 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Young's double-slit experiment with anisotropic GHz surface acoustic waves on gallium arsenide Steenbergen, Thomas Fisicaro, Matteo Czerniak, Krystian Rog, Matthijs Lahabi, Kaveh Löffler, Wolfgang Optics We demonstrate Young's double-slit experiment with GHz surface acoustic waves (SAWs) on gallium arsenide (GaAs). This experiment differs from the well-known optical case due to the anisotropy of SAW propagation on GaAs. We generate SAWs using an interdigital transducer (IDT), and the double-slit is realized by focused ion beam milled grooves which block the SAWs. We measure the out-of-plane SAW displacement with an optical scanning interferometer and apply a spatial Fourier filtering technique, enabling the observation of the two-slit interference pattern, as well as higher order diffraction and near field interference effects. We find reasonable agreement between the measured far-field interference pattern and anisotropic Huygens-Fresnel simulations based on previously reported angle-dependent SAW velocities on GaAs. |
| title | Young's double-slit experiment with anisotropic GHz surface acoustic waves on gallium arsenide |
| topic | Optics |
| url | https://arxiv.org/abs/2507.10117 |