Microring resonator as a Rayleigh mirror for broadband laser-cavity comb generation
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arXiv
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| Format: | Preprint |
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2025
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| author | Mkrtchyan, Aram A. Netrusova, Anastasia S. Mishevsky, Mikhail S. Ali, Zohran Dmitriev, Nikita Yu. Minkov, Kirill N. Chermoshentsev, Dmitry A. Nasibulin, Albert G. Bilenko, Igor A. Gladush, Yuriy G. |
| author_facet | Mkrtchyan, Aram A. Netrusova, Anastasia S. Mishevsky, Mikhail S. Ali, Zohran Dmitriev, Nikita Yu. Minkov, Kirill N. Chermoshentsev, Dmitry A. Nasibulin, Albert G. Bilenko, Igor A. Gladush, Yuriy G. |
| contents | High-quality microring resonators (MRRs) have proven to be promising sources of optical combs generated from continuous-wave radiation. In addition to the primary comb that propagates along with the pump, Rayleigh scattering creates a comb that travels in the opposite direction. Normally, the scattering is a very weak, however, in the high-quality-factor MRR the power transferred to the backward-propagating comb can be quite significant. We demonstrate that the backward-propagating comb can be used as a feedback source for a fiber laser, effectively creating a nonlinear mirror for the laser cavity. By assembling a simple laser cavity comprising only active fiber and two mirrors, one of which is an integrated MRR, we show a robust self-starting comb generation with width exceeding 500 nm. We confirm the universal character of this approach for other types of microresonators, including whispering gallery mode resonators, by launching self-starting laser cavity combs with the crystalline toroidal cavity, coupled with a tapered fiber. This method provides significant simplification for the filter-driven laser cavity soliton generation, especially when free-space coupling is applied. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_09166 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Microring resonator as a Rayleigh mirror for broadband laser-cavity comb generation Mkrtchyan, Aram A. Netrusova, Anastasia S. Mishevsky, Mikhail S. Ali, Zohran Dmitriev, Nikita Yu. Minkov, Kirill N. Chermoshentsev, Dmitry A. Nasibulin, Albert G. Bilenko, Igor A. Gladush, Yuriy G. Optics High-quality microring resonators (MRRs) have proven to be promising sources of optical combs generated from continuous-wave radiation. In addition to the primary comb that propagates along with the pump, Rayleigh scattering creates a comb that travels in the opposite direction. Normally, the scattering is a very weak, however, in the high-quality-factor MRR the power transferred to the backward-propagating comb can be quite significant. We demonstrate that the backward-propagating comb can be used as a feedback source for a fiber laser, effectively creating a nonlinear mirror for the laser cavity. By assembling a simple laser cavity comprising only active fiber and two mirrors, one of which is an integrated MRR, we show a robust self-starting comb generation with width exceeding 500 nm. We confirm the universal character of this approach for other types of microresonators, including whispering gallery mode resonators, by launching self-starting laser cavity combs with the crystalline toroidal cavity, coupled with a tapered fiber. This method provides significant simplification for the filter-driven laser cavity soliton generation, especially when free-space coupling is applied. |
| title | Microring resonator as a Rayleigh mirror for broadband laser-cavity comb generation |
| topic | Optics |
| url | https://arxiv.org/abs/2503.09166 |