Characterization of Long-Term Stable Photonic Microwaves based on a Difference Frequency Comb
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866912671316574208 |
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| author | Mueller, S. Puppe, T. |
| author_facet | Mueller, S. Puppe, T. |
| contents | We report on a novel method for optical microwave generation using a frequency comb based on difference-frequency generation, which passively eliminates the carrier-envelope offset frequency ($f_{\mathrm{ceo}}$), with the repetition rate ($f_{\mathrm{rep}}$) locked to an optical reference. We demonstrate the generation of ultra-low phase noise microwave signals by transferring the stability of the optical reference to 9.6 GHz, reaching noise levels of -147 dBc/Hz at 1 kHz offset. The optimization of pulse timing after interleaving and a scheme for additional long-term stabilization of the microwave signal to GPS standards are discussed. This work presents a new variant of highly stable RF signal generation for precision applications, such as radar, atomic clock local oscillators and optical quantum technologies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_18470 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Characterization of Long-Term Stable Photonic Microwaves based on a Difference Frequency Comb Mueller, S. Puppe, T. Optics We report on a novel method for optical microwave generation using a frequency comb based on difference-frequency generation, which passively eliminates the carrier-envelope offset frequency ($f_{\mathrm{ceo}}$), with the repetition rate ($f_{\mathrm{rep}}$) locked to an optical reference. We demonstrate the generation of ultra-low phase noise microwave signals by transferring the stability of the optical reference to 9.6 GHz, reaching noise levels of -147 dBc/Hz at 1 kHz offset. The optimization of pulse timing after interleaving and a scheme for additional long-term stabilization of the microwave signal to GPS standards are discussed. This work presents a new variant of highly stable RF signal generation for precision applications, such as radar, atomic clock local oscillators and optical quantum technologies. |
| title | Characterization of Long-Term Stable Photonic Microwaves based on a Difference Frequency Comb |
| topic | Optics |
| url | https://arxiv.org/abs/2504.18470 |