Sub-100 Hz Intrinsic Linewidth 852 nm Silicon Nitride External Cavity Laser
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arXiv
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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866916424393424896 |
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| author | Nejadriahi, Hani Kittlaus, Eric Bose, Debapam Chauhan, Nitesh Wang, Jiawei Fradet, Mathieu Bagheri, Mahmood Isichenko, Andrei Heim, David Forouhar, Siamak Blumenthal, Daniel |
| author_facet | Nejadriahi, Hani Kittlaus, Eric Bose, Debapam Chauhan, Nitesh Wang, Jiawei Fradet, Mathieu Bagheri, Mahmood Isichenko, Andrei Heim, David Forouhar, Siamak Blumenthal, Daniel |
| contents | We demonstrate an external cavity laser with intrinsic linewidth below 100 Hz around an operating wavelength of 852 nm, selected for its relevance to laser cooling and manipulation of cesium atoms. This system achieves a maximum CW output power of 24 mW, wavelength tunability over 15 nm, and a side-mode suppression ratio exceeding 50 dB. This performance level is facilitated by careful design of a low-loss integrated silicon nitride photonic circuit serving as the external cavity combined with commercially available semiconductor gain chips. This approach demonstrates the feasibility of compact integrated lasers with sub-kHz linewidth centering on the needs of emerging sensor concepts based on ultracold atoms and can be further extended to shorter wavelengths via selection of suitable semiconductor gain media. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_17382 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Sub-100 Hz Intrinsic Linewidth 852 nm Silicon Nitride External Cavity Laser Nejadriahi, Hani Kittlaus, Eric Bose, Debapam Chauhan, Nitesh Wang, Jiawei Fradet, Mathieu Bagheri, Mahmood Isichenko, Andrei Heim, David Forouhar, Siamak Blumenthal, Daniel Optics Applied Physics Quantum Physics We demonstrate an external cavity laser with intrinsic linewidth below 100 Hz around an operating wavelength of 852 nm, selected for its relevance to laser cooling and manipulation of cesium atoms. This system achieves a maximum CW output power of 24 mW, wavelength tunability over 15 nm, and a side-mode suppression ratio exceeding 50 dB. This performance level is facilitated by careful design of a low-loss integrated silicon nitride photonic circuit serving as the external cavity combined with commercially available semiconductor gain chips. This approach demonstrates the feasibility of compact integrated lasers with sub-kHz linewidth centering on the needs of emerging sensor concepts based on ultracold atoms and can be further extended to shorter wavelengths via selection of suitable semiconductor gain media. |
| title | Sub-100 Hz Intrinsic Linewidth 852 nm Silicon Nitride External Cavity Laser |
| topic | Optics Applied Physics Quantum Physics |
| url | https://arxiv.org/abs/2409.17382 |