High-Q AlN microresonators for nonlinear near-infrared and near-visible photonics
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arXiv
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| Autores principales: | , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866917186748022784 |
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| author | Ding, Yulei Huang, Yuming Yin, Zhongdong Wang, Yifei Liu, Kewei Guo, Yanan Zhang, Liang Zhang, Qi Yan, Jianchang Wang, Junxi Yang, Changxi Bao, Chengying |
| author_facet | Ding, Yulei Huang, Yuming Yin, Zhongdong Wang, Yifei Liu, Kewei Guo, Yanan Zhang, Liang Zhang, Qi Yan, Jianchang Wang, Junxi Yang, Changxi Bao, Chengying |
| contents | High Q-factors of microresonators are crucial for nonlinear integrated photonics, as many nonlinear dynamics have quadratic or even cubic dependence on Q-factors. The unique material properties make AlN microresonators invaluable for microcomb generation, Raman lasing and visible integrated photonics. However, the loss level of AlN falls behind other integrated platforms. By optimizing the fabrication, we demonstrate record Q-factors of 5.4$\times$10$^6$ and 2.2$\times$10$^6$ for AlN microresonators in the near-infrared and near-visible, respectively. Polarized-mode-interaction was used to create anomalous dispersion to support bright AlN Dirac solitons. Measurement of polarization-dependent spectra reveals the polarization hybridization of the Dirac soliton. In a microresonator with normal dispersion, Raman assisted four-wave-mixing (RFWM) was observed to initiate platicon formation, adding an approach to generate normal dispersion microcombs. A design of width-varying waveguides was used to ensure both efficient coupling and high Q-factor for racetrack microresonators at 780 nm. The microresonator was pumped to generate near-visble Raman laser at 820 nm with a fundamental linewidth narrower than 220 Hz. Our work unlocks new opportunities for integrated AlN photonics by improving Q-factors and uncovering nonlinear dynamics in AlN microresonators. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_02842 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | High-Q AlN microresonators for nonlinear near-infrared and near-visible photonics Ding, Yulei Huang, Yuming Yin, Zhongdong Wang, Yifei Liu, Kewei Guo, Yanan Zhang, Liang Zhang, Qi Yan, Jianchang Wang, Junxi Yang, Changxi Bao, Chengying Optics High Q-factors of microresonators are crucial for nonlinear integrated photonics, as many nonlinear dynamics have quadratic or even cubic dependence on Q-factors. The unique material properties make AlN microresonators invaluable for microcomb generation, Raman lasing and visible integrated photonics. However, the loss level of AlN falls behind other integrated platforms. By optimizing the fabrication, we demonstrate record Q-factors of 5.4$\times$10$^6$ and 2.2$\times$10$^6$ for AlN microresonators in the near-infrared and near-visible, respectively. Polarized-mode-interaction was used to create anomalous dispersion to support bright AlN Dirac solitons. Measurement of polarization-dependent spectra reveals the polarization hybridization of the Dirac soliton. In a microresonator with normal dispersion, Raman assisted four-wave-mixing (RFWM) was observed to initiate platicon formation, adding an approach to generate normal dispersion microcombs. A design of width-varying waveguides was used to ensure both efficient coupling and high Q-factor for racetrack microresonators at 780 nm. The microresonator was pumped to generate near-visble Raman laser at 820 nm with a fundamental linewidth narrower than 220 Hz. Our work unlocks new opportunities for integrated AlN photonics by improving Q-factors and uncovering nonlinear dynamics in AlN microresonators. |
| title | High-Q AlN microresonators for nonlinear near-infrared and near-visible photonics |
| topic | Optics |
| url | https://arxiv.org/abs/2601.02842 |