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| Main Authors: | , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2404.14734 |
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| _version_ | 1866912232516878336 |
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| author | Wang, Yuxin Zheng, Zhiyue Zhang, Qiuxin Lai, Yonglang Ge, Zongqi Wang, Tianyi Ding, Liangyu Vasilii, Smirnov Semerikov, Ilya Zhang, Shuaining Zhang, Wei Zhang, Xiang |
| author_facet | Wang, Yuxin Zheng, Zhiyue Zhang, Qiuxin Lai, Yonglang Ge, Zongqi Wang, Tianyi Ding, Liangyu Vasilii, Smirnov Semerikov, Ilya Zhang, Shuaining Zhang, Wei Zhang, Xiang |
| contents | We propose a novel pulsed optical field method that alternately switches the pump beam in conventional saturation absorption to time-division multiplex the same probe beam into both probe and reference beams, followed by digital differential processing to achieve deterministic zero-background Doppler-free spectroscopy. This method effectively mitigates Doppler broadening and common-mode optical noise by addressing disturbances such as non-uniform background absorption and environmental noise, thereby offering enhanced accuracy and robustness. Using this technique, we measured the absolute frequency of Yb$^{+}$ isotopes in the $6s^2\ ^{1}S_0\to 6s6p ^{1}P_1$ transition. By employing an error signal derived from the first-derivative demodulated spectrum of $^{174}\mathrm{Yb}^{+}$, we achieved efficient stabilization of a 369.5 nm ultraviolet diode laser, demonstrating a frequency stability of $3 \times 10^{-11}$ over a 1500-second averaging period and a locking point uncertainty of 850 kHz sustained over 10 days. Furthermore, we report the first in-situ observation of Doppler-free Zeeman sub-level spectra, highlighting the precision of this method and its potential application in measuring magnetic field gradients. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_14734 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | In-situ Doppler-free spectroscopy with pulsed optical fields Wang, Yuxin Zheng, Zhiyue Zhang, Qiuxin Lai, Yonglang Ge, Zongqi Wang, Tianyi Ding, Liangyu Vasilii, Smirnov Semerikov, Ilya Zhang, Shuaining Zhang, Wei Zhang, Xiang Optics We propose a novel pulsed optical field method that alternately switches the pump beam in conventional saturation absorption to time-division multiplex the same probe beam into both probe and reference beams, followed by digital differential processing to achieve deterministic zero-background Doppler-free spectroscopy. This method effectively mitigates Doppler broadening and common-mode optical noise by addressing disturbances such as non-uniform background absorption and environmental noise, thereby offering enhanced accuracy and robustness. Using this technique, we measured the absolute frequency of Yb$^{+}$ isotopes in the $6s^2\ ^{1}S_0\to 6s6p ^{1}P_1$ transition. By employing an error signal derived from the first-derivative demodulated spectrum of $^{174}\mathrm{Yb}^{+}$, we achieved efficient stabilization of a 369.5 nm ultraviolet diode laser, demonstrating a frequency stability of $3 \times 10^{-11}$ over a 1500-second averaging period and a locking point uncertainty of 850 kHz sustained over 10 days. Furthermore, we report the first in-situ observation of Doppler-free Zeeman sub-level spectra, highlighting the precision of this method and its potential application in measuring magnetic field gradients. |
| title | In-situ Doppler-free spectroscopy with pulsed optical fields |
| topic | Optics |
| url | https://arxiv.org/abs/2404.14734 |