Multicolor interband solitons in microcombs
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arXiv
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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866911074194817024 |
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| author | Ji, Qing-Xin Hou, Hanfei Ge, Jinhao Yu, Yan Gao, Maodong Jin, Warren Guo, Joel Wu, Lue Liu, Peng Feshali, Avi Paniccia, Mario Bowers, John Vahala, Kerry |
| author_facet | Ji, Qing-Xin Hou, Hanfei Ge, Jinhao Yu, Yan Gao, Maodong Jin, Warren Guo, Joel Wu, Lue Liu, Peng Feshali, Avi Paniccia, Mario Bowers, John Vahala, Kerry |
| contents | In microcombs, solitons can drive non-soliton-forming modes to induce optical gain. Under specific conditions, a regenerative secondary temporal pulse coinciding in time and space with the exciting soliton pulse will form at a new spectral location. A mechanism involving Kerr-induced pulse interactions has been proposed theoretically, leading to multicolor solitons containing constituent phase-locked pulses. However, the occurrence of this phenomenon requires dispersion conditions that are not naturally satisfied in conventional optical microresonators. Here, we report the experimental observation of multicolor pulses from a single optical pump in a way that is closely related to the concept of multicolor solitons. The individual soliton pulses share the same repetition rate and could potentially be fully phase-locked. They are generated using interband coupling in a compound resonator. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_18058 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Multicolor interband solitons in microcombs Ji, Qing-Xin Hou, Hanfei Ge, Jinhao Yu, Yan Gao, Maodong Jin, Warren Guo, Joel Wu, Lue Liu, Peng Feshali, Avi Paniccia, Mario Bowers, John Vahala, Kerry Optics In microcombs, solitons can drive non-soliton-forming modes to induce optical gain. Under specific conditions, a regenerative secondary temporal pulse coinciding in time and space with the exciting soliton pulse will form at a new spectral location. A mechanism involving Kerr-induced pulse interactions has been proposed theoretically, leading to multicolor solitons containing constituent phase-locked pulses. However, the occurrence of this phenomenon requires dispersion conditions that are not naturally satisfied in conventional optical microresonators. Here, we report the experimental observation of multicolor pulses from a single optical pump in a way that is closely related to the concept of multicolor solitons. The individual soliton pulses share the same repetition rate and could potentially be fully phase-locked. They are generated using interband coupling in a compound resonator. |
| title | Multicolor interband solitons in microcombs |
| topic | Optics |
| url | https://arxiv.org/abs/2507.18058 |