Single-Beam Magneto-Optical Trap in Back-to-Back Pyramidal and Conical Mirrors
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866912667411677184 |
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| author | Nguyen, Timothy H. Mchedlidze, Mariam Su, Guanghui Loglia, Balthazar Yang, Hanbo Wu, Xuejian |
| author_facet | Nguyen, Timothy H. Mchedlidze, Mariam Su, Guanghui Loglia, Balthazar Yang, Hanbo Wu, Xuejian |
| contents | A three-dimensional magneto-optical trap (MOT), as an efficient method of producing cold atoms from room-temperature atomic vapor, has been widely used to develop atomic sensors. Various compact MOTs using a single laser beam have been reported, simplifying apparatuses and leading to miniaturized devices. Here, we propose single-beam MOTs based on back-to-back pyramidal and conical mirrors. In such back-to-back mirrors, a MOT trapping volume is formed by an incident laser beam, a retroreflected beam, and multiple reflections from the mirror surfaces. We present the design of back-to-back mirrors and a series of compact MOT configurations, with the potential of increasing access to the MOT and simultaneously creating multiple MOTs. We demonstrate a MOT in a back-to-back conical mirror, loading 10 million rubidium-87 atoms from background vapor and cooling the atoms to 7 μK using polarization gradients. Single-beam MOTs based on back-to-back mirrors will contribute to building compact and scalable cold-atom-based sensors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_07925 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Single-Beam Magneto-Optical Trap in Back-to-Back Pyramidal and Conical Mirrors Nguyen, Timothy H. Mchedlidze, Mariam Su, Guanghui Loglia, Balthazar Yang, Hanbo Wu, Xuejian Atomic Physics Quantum Physics A three-dimensional magneto-optical trap (MOT), as an efficient method of producing cold atoms from room-temperature atomic vapor, has been widely used to develop atomic sensors. Various compact MOTs using a single laser beam have been reported, simplifying apparatuses and leading to miniaturized devices. Here, we propose single-beam MOTs based on back-to-back pyramidal and conical mirrors. In such back-to-back mirrors, a MOT trapping volume is formed by an incident laser beam, a retroreflected beam, and multiple reflections from the mirror surfaces. We present the design of back-to-back mirrors and a series of compact MOT configurations, with the potential of increasing access to the MOT and simultaneously creating multiple MOTs. We demonstrate a MOT in a back-to-back conical mirror, loading 10 million rubidium-87 atoms from background vapor and cooling the atoms to 7 μK using polarization gradients. Single-beam MOTs based on back-to-back mirrors will contribute to building compact and scalable cold-atom-based sensors. |
| title | Single-Beam Magneto-Optical Trap in Back-to-Back Pyramidal and Conical Mirrors |
| topic | Atomic Physics Quantum Physics |
| url | https://arxiv.org/abs/2507.07925 |