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| Format: | Preprint |
| Veröffentlicht: |
2025
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| Online-Zugang: | https://arxiv.org/abs/2510.24991 |
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| _version_ | 1866917049141297152 |
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| author | Feng, Zitong Marra, Giuseppe Edreira, Irene Barbeito Sakr, Hesham Poletti, Francesco Slavik, Radan |
| author_facet | Feng, Zitong Marra, Giuseppe Edreira, Irene Barbeito Sakr, Hesham Poletti, Francesco Slavik, Radan |
| contents | Ultra-stable lasers are fundamental to a growing range of applications, including optical frequency metrology, fundamental physics and quantum sensing. Their outstanding performance is achieved by stabilizing their frequency to Ultra-Low Expansion (ULE) optical cavities. However, the complexity of fabrication and assembly of these systems - even for compact designs - has been limiting their widespread deployment. While micro-resonators and optical fibre delay lines offer alternatives, their performance is significantly limited by thermally-induced frequency drift. Here we demonstrate, for the first time to the best of our knowledge, a laser stabilised to a Hollow Core Fibre (HCF) achieving comparable performance to ULE cavity-stabilised lasers. We achieve a frequency instability of 4.6x10-15 at 1 s and a frequency drift of 88 mHz/s, reducible to 3.7 mHz/s with thermal correction. Furthermore, over 3-year characterization confirms the HCF's predictable long-term behaviour. These results and the simplicity of the HCF-based system pave the way to a high-performance and scalable solution for ultra-stable laser sources. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_24991 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Ultra-stable lasers using hollow-core fibre Feng, Zitong Marra, Giuseppe Edreira, Irene Barbeito Sakr, Hesham Poletti, Francesco Slavik, Radan Optics Ultra-stable lasers are fundamental to a growing range of applications, including optical frequency metrology, fundamental physics and quantum sensing. Their outstanding performance is achieved by stabilizing their frequency to Ultra-Low Expansion (ULE) optical cavities. However, the complexity of fabrication and assembly of these systems - even for compact designs - has been limiting their widespread deployment. While micro-resonators and optical fibre delay lines offer alternatives, their performance is significantly limited by thermally-induced frequency drift. Here we demonstrate, for the first time to the best of our knowledge, a laser stabilised to a Hollow Core Fibre (HCF) achieving comparable performance to ULE cavity-stabilised lasers. We achieve a frequency instability of 4.6x10-15 at 1 s and a frequency drift of 88 mHz/s, reducible to 3.7 mHz/s with thermal correction. Furthermore, over 3-year characterization confirms the HCF's predictable long-term behaviour. These results and the simplicity of the HCF-based system pave the way to a high-performance and scalable solution for ultra-stable laser sources. |
| title | Ultra-stable lasers using hollow-core fibre |
| topic | Optics |
| url | https://arxiv.org/abs/2510.24991 |