Raman-induced dynamics of ultrafast microresonator solitons
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arXiv
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| Autores principales: | , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866917064507129856 |
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| author | Nie, Binbin Wang, Yuanlei Qian, Du Yang, Yiwen Luo, Haoyang Wang, Junqi Xiao, Yun-Feng Gong, Qihuang Yang, Qi-Fan |
| author_facet | Nie, Binbin Wang, Yuanlei Qian, Du Yang, Yiwen Luo, Haoyang Wang, Junqi Xiao, Yun-Feng Gong, Qihuang Yang, Qi-Fan |
| contents | Soliton microcombs are evolving towards octave-spanning for $f$-$2f$ self-referencing and expanding applications in spectroscopy and timekeeping. As spectra broaden and pulses shorten, the Raman-induced soliton self-frequency shift (SSFS) becomes a principal limitation: it reduces pump-to-comb conversion efficiency, constrains achievable span, and can, in extremes, preclude stationary operation. We develop a complementary theory of SSFS in microresonators that remains valid when the soliton duration $τ_s$ is shorter than the Raman response timescale. The theory predicts a reduced dependence of the SSFS on $τ_s$ which also expands the soliton existence range. Such predictions are validated by numerical simulations and by experiments on Si$_3$N$_4$ microresonators. Our results provide practical guidelines for engineering efficient and broadband soliton microcombs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_04013 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Raman-induced dynamics of ultrafast microresonator solitons Nie, Binbin Wang, Yuanlei Qian, Du Yang, Yiwen Luo, Haoyang Wang, Junqi Xiao, Yun-Feng Gong, Qihuang Yang, Qi-Fan Optics Soliton microcombs are evolving towards octave-spanning for $f$-$2f$ self-referencing and expanding applications in spectroscopy and timekeeping. As spectra broaden and pulses shorten, the Raman-induced soliton self-frequency shift (SSFS) becomes a principal limitation: it reduces pump-to-comb conversion efficiency, constrains achievable span, and can, in extremes, preclude stationary operation. We develop a complementary theory of SSFS in microresonators that remains valid when the soliton duration $τ_s$ is shorter than the Raman response timescale. The theory predicts a reduced dependence of the SSFS on $τ_s$ which also expands the soliton existence range. Such predictions are validated by numerical simulations and by experiments on Si$_3$N$_4$ microresonators. Our results provide practical guidelines for engineering efficient and broadband soliton microcombs. |
| title | Raman-induced dynamics of ultrafast microresonator solitons |
| topic | Optics |
| url | https://arxiv.org/abs/2511.04013 |