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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2510.08170 |
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| _version_ | 1866914083739009024 |
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| author | Chen, Jia-Lin Yang, Yuan-Hao Zhu, Zheng-Xu Wang, Jia-Qi Xu, Xin-Biao Li, Ming Han, Zheng-Fu Guo, Guang-Can Chen, Wei Zou, Chang-Ling |
| author_facet | Chen, Jia-Lin Yang, Yuan-Hao Zhu, Zheng-Xu Wang, Jia-Qi Xu, Xin-Biao Li, Ming Han, Zheng-Fu Guo, Guang-Can Chen, Wei Zou, Chang-Ling |
| contents | Thin-film lithium niobate on sapphire provides an excellent platform for simultaneously confining acoustic and optical modes without suspended structures, enabling efficient acousto-optic modulation through strong piezoelectric coupling. Here, we identify the challenges in realizing the forward Brillouin interaction at visible wavelengths, and overcome the limitation by introducing a quasi-phase-matching scheme through periodic waveguide width modulation. We predict a complete inter-modal optical conversion over 1.1 mm using only 1 mW acoustic power. Our study paves the way for high-performance visible-wavelength acousto-optic devices on integrated platforms. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_08170 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Proposal for Forward Brillouin Inter-Modal Scattering in Non-suspended Lithium Niobate Waveguides at Visible Wavelengths Chen, Jia-Lin Yang, Yuan-Hao Zhu, Zheng-Xu Wang, Jia-Qi Xu, Xin-Biao Li, Ming Han, Zheng-Fu Guo, Guang-Can Chen, Wei Zou, Chang-Ling Optics Thin-film lithium niobate on sapphire provides an excellent platform for simultaneously confining acoustic and optical modes without suspended structures, enabling efficient acousto-optic modulation through strong piezoelectric coupling. Here, we identify the challenges in realizing the forward Brillouin interaction at visible wavelengths, and overcome the limitation by introducing a quasi-phase-matching scheme through periodic waveguide width modulation. We predict a complete inter-modal optical conversion over 1.1 mm using only 1 mW acoustic power. Our study paves the way for high-performance visible-wavelength acousto-optic devices on integrated platforms. |
| title | Proposal for Forward Brillouin Inter-Modal Scattering in Non-suspended Lithium Niobate Waveguides at Visible Wavelengths |
| topic | Optics |
| url | https://arxiv.org/abs/2510.08170 |