Frequency Stabilization Technology of 1560 nm Fiber Laser Based on Rubidium Modulation Transfer Spectroscopy
The modulation transfer spectroscopy (MTS) technique used to stabilize two different transition lines of rubidium, required for laser cooling of atoms, is investigated. The laser source is based on a 1560 nm semiconductor laser diode that is amplified by an erbium doped fiber amplifier (EDFA). The l...
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2024-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/10534805/ |
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| author | Yang Bai Jun Ruan Dandan Liu Sichen Fan Yong Guan Pengyue Lei |
| author_facet | Yang Bai Jun Ruan Dandan Liu Sichen Fan Yong Guan Pengyue Lei |
| author_sort | Yang Bai |
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| description | The modulation transfer spectroscopy (MTS) technique used to stabilize two different transition lines of rubidium, required for laser cooling of atoms, is investigated. The laser source is based on a 1560 nm semiconductor laser diode that is amplified by an erbium doped fiber amplifier (EDFA). The laser output is frequency doubled with a fiber coupled periodically poled Lithium Niobate (PPLN) crystal to 780 nm. To address the weak spectral features of repumping laser, a theoretical study is conducted followed by experimental verification. The <sup>87</sup>Rb D<sub>2</sub> line <italic>F</italic> = 1 → <italic>F</italic>′ = 0 transition temperature-enhanced MTS signal is observed, which provides a choice to stabilize the repumping laser frquency on the <italic>F</italic> = 1 → <italic>F</italic>′ = 2 transition using frequency shifting with acousto-optic modulators (AOMs). Compared with the orignal MTS signal, this method is shown to be more stable and accurate for laser frequency locking. Laer frequency locking is realized by controlling the driving current of the seed laser using digital PID feedback. After locking, the laser linewidth is 35.36 kHz. |
| format | Article |
| id | doaj-art-779b395abff146339c112e50c7ac8b73 |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IEEE |
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| series | IEEE Photonics Journal |
| spelling | doaj-art-779b395abff146339c112e50c7ac8b732025-08-20T03:32:51ZengIEEEIEEE Photonics Journal1943-06552024-01-011651610.1109/JPHOT.2024.340274210534805Frequency Stabilization Technology of 1560 nm Fiber Laser Based on Rubidium Modulation Transfer SpectroscopyYang Bai0https://orcid.org/0000-0003-1930-8438Jun Ruan1https://orcid.org/0000-0001-6544-9173Dandan Liu2https://orcid.org/0000-0003-4964-634XSichen Fan3https://orcid.org/0000-0002-3524-1002Yong Guan4https://orcid.org/0000-0001-7644-5274Pengyue Lei5https://orcid.org/0009-0002-2285-2020National Time Service Center, Chinese Academy of Sciences, Xi'an, ChinaNational Time Service Center, Chinese Academy of Sciences, Xi'an, ChinaNational Time Service Center, Chinese Academy of Sciences, Xi'an, ChinaNational Time Service Center, Chinese Academy of Sciences, Xi'an, ChinaNational Time Service Center, Chinese Academy of Sciences, Xi'an, ChinaNational Time Service Center, Chinese Academy of Sciences, Xi'an, ChinaThe modulation transfer spectroscopy (MTS) technique used to stabilize two different transition lines of rubidium, required for laser cooling of atoms, is investigated. The laser source is based on a 1560 nm semiconductor laser diode that is amplified by an erbium doped fiber amplifier (EDFA). The laser output is frequency doubled with a fiber coupled periodically poled Lithium Niobate (PPLN) crystal to 780 nm. To address the weak spectral features of repumping laser, a theoretical study is conducted followed by experimental verification. The <sup>87</sup>Rb D<sub>2</sub> line <italic>F</italic> = 1 → <italic>F</italic>′ = 0 transition temperature-enhanced MTS signal is observed, which provides a choice to stabilize the repumping laser frquency on the <italic>F</italic> = 1 → <italic>F</italic>′ = 2 transition using frequency shifting with acousto-optic modulators (AOMs). Compared with the orignal MTS signal, this method is shown to be more stable and accurate for laser frequency locking. Laer frequency locking is realized by controlling the driving current of the seed laser using digital PID feedback. After locking, the laser linewidth is 35.36 kHz.https://ieeexplore.ieee.org/document/10534805/Fiber lasermodulation transfer spectroscopytemperature-enhanced MTS |
| spellingShingle | Yang Bai Jun Ruan Dandan Liu Sichen Fan Yong Guan Pengyue Lei Frequency Stabilization Technology of 1560 nm Fiber Laser Based on Rubidium Modulation Transfer Spectroscopy IEEE Photonics Journal Fiber laser modulation transfer spectroscopy temperature-enhanced MTS |
| title | Frequency Stabilization Technology of 1560 nm Fiber Laser Based on Rubidium Modulation Transfer Spectroscopy |
| title_full | Frequency Stabilization Technology of 1560 nm Fiber Laser Based on Rubidium Modulation Transfer Spectroscopy |
| title_fullStr | Frequency Stabilization Technology of 1560 nm Fiber Laser Based on Rubidium Modulation Transfer Spectroscopy |
| title_full_unstemmed | Frequency Stabilization Technology of 1560 nm Fiber Laser Based on Rubidium Modulation Transfer Spectroscopy |
| title_short | Frequency Stabilization Technology of 1560 nm Fiber Laser Based on Rubidium Modulation Transfer Spectroscopy |
| title_sort | frequency stabilization technology of 1560 nm fiber laser based on rubidium modulation transfer spectroscopy |
| topic | Fiber laser modulation transfer spectroscopy temperature-enhanced MTS |
| url | https://ieeexplore.ieee.org/document/10534805/ |
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