Stability Assessment of Rydberg Electromagnetically Induced Transparency Locking via Optical Heterodyne Spectroscopy
Frequency locking to reference atomic lines using Rydberg electromagnetically induced transparency (EIT) has been recently introduced as an inexpensive and reliable technique for laser frequency stabilization. In this work, we carry out a systematic study of this technique using heterodyne beat spec...
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MDPI AG
2025-04-01
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| author | Qiuyu Yin Yanzhao Liang Haitao Lin Ning Ji Thibault Vogt |
| author_facet | Qiuyu Yin Yanzhao Liang Haitao Lin Ning Ji Thibault Vogt |
| author_sort | Qiuyu Yin |
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| description | Frequency locking to reference atomic lines using Rydberg electromagnetically induced transparency (EIT) has been recently introduced as an inexpensive and reliable technique for laser frequency stabilization. In this work, we carry out a systematic study of this technique using heterodyne beat spectroscopy. Two different commercial semi-conductor lasers are locked to the same reference frequency using EIT locking, and their relative frequency stability is analyzed and continuously monitored in real time. A substantial improvement in the laser frequency stability is achieved through searching for the optimal proportional–integral settings and EIT probe laser powers. The results show that the cutoff frequency of the beat signal can be lowered to less than 500 kHz. We also compare the frequencies of free running lasers with that of a locked laser and characterize their frequency drifts. This study is important in assessing the use of Rydberg EIT locking in atomic electrometers. |
| format | Article |
| id | doaj-art-670a918c3d5f480a888796f0a637c8ca |
| institution | OA Journals |
| issn | 2304-6732 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
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| series | Photonics |
| spelling | doaj-art-670a918c3d5f480a888796f0a637c8ca2025-08-20T02:28:38ZengMDPI AGPhotonics2304-67322025-04-0112437410.3390/photonics12040374Stability Assessment of Rydberg Electromagnetically Induced Transparency Locking via Optical Heterodyne SpectroscopyQiuyu Yin0Yanzhao Liang1Haitao Lin2Ning Ji3Thibault Vogt4School of Physics and Astronomy, Sun Yat-sen University, Zhuhai 519082, ChinaSchool of Physics and Astronomy, Sun Yat-sen University, Zhuhai 519082, ChinaSchool of Physics and Astronomy, Sun Yat-sen University, Zhuhai 519082, ChinaSchool of Physics and Astronomy, Sun Yat-sen University, Zhuhai 519082, ChinaSchool of Physics and Astronomy, Sun Yat-sen University, Zhuhai 519082, ChinaFrequency locking to reference atomic lines using Rydberg electromagnetically induced transparency (EIT) has been recently introduced as an inexpensive and reliable technique for laser frequency stabilization. In this work, we carry out a systematic study of this technique using heterodyne beat spectroscopy. Two different commercial semi-conductor lasers are locked to the same reference frequency using EIT locking, and their relative frequency stability is analyzed and continuously monitored in real time. A substantial improvement in the laser frequency stability is achieved through searching for the optimal proportional–integral settings and EIT probe laser powers. The results show that the cutoff frequency of the beat signal can be lowered to less than 500 kHz. We also compare the frequencies of free running lasers with that of a locked laser and characterize their frequency drifts. This study is important in assessing the use of Rydberg EIT locking in atomic electrometers.https://www.mdpi.com/2304-6732/12/4/374laser frequency stabilizationoptical heterodyne spectroscopyelectromagnetically induced transparencyRydberg statesatomic electrometry |
| spellingShingle | Qiuyu Yin Yanzhao Liang Haitao Lin Ning Ji Thibault Vogt Stability Assessment of Rydberg Electromagnetically Induced Transparency Locking via Optical Heterodyne Spectroscopy Photonics laser frequency stabilization optical heterodyne spectroscopy electromagnetically induced transparency Rydberg states atomic electrometry |
| title | Stability Assessment of Rydberg Electromagnetically Induced Transparency Locking via Optical Heterodyne Spectroscopy |
| title_full | Stability Assessment of Rydberg Electromagnetically Induced Transparency Locking via Optical Heterodyne Spectroscopy |
| title_fullStr | Stability Assessment of Rydberg Electromagnetically Induced Transparency Locking via Optical Heterodyne Spectroscopy |
| title_full_unstemmed | Stability Assessment of Rydberg Electromagnetically Induced Transparency Locking via Optical Heterodyne Spectroscopy |
| title_short | Stability Assessment of Rydberg Electromagnetically Induced Transparency Locking via Optical Heterodyne Spectroscopy |
| title_sort | stability assessment of rydberg electromagnetically induced transparency locking via optical heterodyne spectroscopy |
| topic | laser frequency stabilization optical heterodyne spectroscopy electromagnetically induced transparency Rydberg states atomic electrometry |
| url | https://www.mdpi.com/2304-6732/12/4/374 |
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