A cold cesium beam source based on a two-dimensional magneto-optical trap
A beam source is proposed for the production of an intense cold cesium atomic beam that can be used in cesium beam atomic clocks. The source is based on a two-dimensional magneto-optical trap (2D-MOT), but introduces hollow cooling and pushing lights in the axial direction to create a 2D+-MOT, which...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2022-07-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0099415 |
| _version_ | 1818487089264590848 |
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| author | Weibin Xie Qing Wang Xuan He Shengwei Fang Zhichao Yuan Xianghui Qi Xuzong Chen |
| author_facet | Weibin Xie Qing Wang Xuan He Shengwei Fang Zhichao Yuan Xianghui Qi Xuzong Chen |
| author_sort | Weibin Xie |
| collection | DOAJ |
| description | A beam source is proposed for the production of an intense cold cesium atomic beam that can be used in cesium beam atomic clocks. The source is based on a two-dimensional magneto-optical trap (2D-MOT), but introduces hollow cooling and pushing lights in the axial direction to create a 2D+-MOT, which separates the cooling and pushing functions while the low-power pushing light pushes atoms out to form a cold atomic beam. This cold cesium atomic beam source reduces the light shift due to leakage light and retains longitudinal cooling to increase the flux of the cold atomic beam compared with that of the conventional 2D+-MOT scheme. The specifics of the design are investigated, the atomic velocity and beam flux are calculated, and the results are experimentally verified. The results demonstrate that when the power of the pushing light is 180 µW and when its frequency resonates with the 4 → 5′ transition of the Cs D2 line, the most probable longitudinal velocity of the outgoing cold atomic beam, the width of velocity distribution, and the atomic beam flux are 19.38 m/s, 8.1 m/s, and 1.7 × 1010 atoms/s, respectively. |
| first_indexed | 2024-12-10T16:32:43Z |
| format | Article |
| id | doaj.art-49b546e7ea97479285eb123f2c77cc92 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-10T16:32:43Z |
| publishDate | 2022-07-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-49b546e7ea97479285eb123f2c77cc922022-12-22T01:41:30ZengAIP Publishing LLCAIP Advances2158-32262022-07-01127075124075124-1010.1063/5.0099415A cold cesium beam source based on a two-dimensional magneto-optical trapWeibin Xie0Qing Wang1Xuan He2Shengwei Fang3Zhichao Yuan4Xianghui Qi5Xuzong Chen6Institute of Quantum Electronics, School of Electronics, Peking University, Beijing 100871, ChinaInstitute of Fundamental Experiment Education, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, ChinaInstitute of Quantum Electronics, School of Electronics, Peking University, Beijing 100871, ChinaInstitute of Quantum Electronics, School of Electronics, Peking University, Beijing 100871, ChinaInstitute of Quantum Electronics, School of Electronics, Peking University, Beijing 100871, ChinaInstitute of Quantum Electronics, School of Electronics, Peking University, Beijing 100871, ChinaInstitute of Quantum Electronics, School of Electronics, Peking University, Beijing 100871, ChinaA beam source is proposed for the production of an intense cold cesium atomic beam that can be used in cesium beam atomic clocks. The source is based on a two-dimensional magneto-optical trap (2D-MOT), but introduces hollow cooling and pushing lights in the axial direction to create a 2D+-MOT, which separates the cooling and pushing functions while the low-power pushing light pushes atoms out to form a cold atomic beam. This cold cesium atomic beam source reduces the light shift due to leakage light and retains longitudinal cooling to increase the flux of the cold atomic beam compared with that of the conventional 2D+-MOT scheme. The specifics of the design are investigated, the atomic velocity and beam flux are calculated, and the results are experimentally verified. The results demonstrate that when the power of the pushing light is 180 µW and when its frequency resonates with the 4 → 5′ transition of the Cs D2 line, the most probable longitudinal velocity of the outgoing cold atomic beam, the width of velocity distribution, and the atomic beam flux are 19.38 m/s, 8.1 m/s, and 1.7 × 1010 atoms/s, respectively.http://dx.doi.org/10.1063/5.0099415 |
| spellingShingle | Weibin Xie Qing Wang Xuan He Shengwei Fang Zhichao Yuan Xianghui Qi Xuzong Chen A cold cesium beam source based on a two-dimensional magneto-optical trap AIP Advances |
| title | A cold cesium beam source based on a two-dimensional magneto-optical trap |
| title_full | A cold cesium beam source based on a two-dimensional magneto-optical trap |
| title_fullStr | A cold cesium beam source based on a two-dimensional magneto-optical trap |
| title_full_unstemmed | A cold cesium beam source based on a two-dimensional magneto-optical trap |
| title_short | A cold cesium beam source based on a two-dimensional magneto-optical trap |
| title_sort | cold cesium beam source based on a two dimensional magneto optical trap |
| url | http://dx.doi.org/10.1063/5.0099415 |
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