Highly coherent phase-lock of an 8.1 $μ$m quantum cascade laser to a turn-key mid-IR frequency comb
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866912165689032704 |
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| author | Chomet, B. Gacemi, D. Lopez, O. Del Balzo, L. Vasanelli, A. Todorov, Y. Darquié, B. Sirtori, C. |
| author_facet | Chomet, B. Gacemi, D. Lopez, O. Del Balzo, L. Vasanelli, A. Todorov, Y. Darquié, B. Sirtori, C. |
| contents | A continuous-wave Fabry-Perot quantum cascade laser (QCL) emitting at 8.1 $μ$m operating in the single mode regime has been coherently phase locked to a turn-key low-noise commercial mid-Infrared (mid-IR) optical frequency comb. The stability of the comb used as a reference is transferred to the QCL resulting in an integrated residual phase error of 0.4 rad. The laser linewidth is narrowed by more than two orders of magnitude reaching sub-kHz level at 1 ms observation time, limited by the spectral purity of the mid-IR comb. Our experiment is an important step toward the development of both powerful and metrology-grade QCLs and fully stabilized QCL frequency comb and opens perspectives for precision measurements and frequency metrology in the mid-IR. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2412_16702 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Highly coherent phase-lock of an 8.1 $μ$m quantum cascade laser to a turn-key mid-IR frequency comb Chomet, B. Gacemi, D. Lopez, O. Del Balzo, L. Vasanelli, A. Todorov, Y. Darquié, B. Sirtori, C. Optics Instrumentation and Detectors A continuous-wave Fabry-Perot quantum cascade laser (QCL) emitting at 8.1 $μ$m operating in the single mode regime has been coherently phase locked to a turn-key low-noise commercial mid-Infrared (mid-IR) optical frequency comb. The stability of the comb used as a reference is transferred to the QCL resulting in an integrated residual phase error of 0.4 rad. The laser linewidth is narrowed by more than two orders of magnitude reaching sub-kHz level at 1 ms observation time, limited by the spectral purity of the mid-IR comb. Our experiment is an important step toward the development of both powerful and metrology-grade QCLs and fully stabilized QCL frequency comb and opens perspectives for precision measurements and frequency metrology in the mid-IR. |
| title | Highly coherent phase-lock of an 8.1 $μ$m quantum cascade laser to a turn-key mid-IR frequency comb |
| topic | Optics Instrumentation and Detectors |
| url | https://arxiv.org/abs/2412.16702 |