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5 November 2020 Study on temperature fluctuation measurement in alkali vapor cell
Huining Shang, Kaifeng Yin, Tao Shi, Yan Yin, Jing Wang, Yeguang Yan, Binquan Zhou, Heng Yuan
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Proceedings Volume 11566, AOPC 2020: Optical Spectroscopy and Imaging; and Biomedical Optics; 115660M (2020) https://doi.org/10.1117/12.2580060
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China
Abstract
Recent developments in the exploration of atomic spin instrumentation have enabled the atomic magnetometer to become the most effective detector of magnetic fields. The stability of temperature in alkali vapor cells is an important factor for ensuring the measurement accuracy of atomic magnetometers. The alkali vapor cell is usually heated to 80°C ∼ 190°C. During the heating process, although the heating system reaches a steady state, the temperature inside the alkali metal cell will still fluctuate, which will affect the accuracy of the device measurement. In this paper, K cells were simulated and analyzed by using the theory of atomic absorption spectroscopy theory. By the mathematical relationship models, the simulation analysis of the cell containing alkali vapor found that, within a small temperature fluctuation range (±1°C), the temperature fluctuation of the alkali vapor cell filled with buffer gas and the broadening parameter of the atomic absorption spectrum, as well as the frequency shift parameter all show a linear relationship. In order to facilitate the actual measurement, the relationship between the detection light intensity transmitted through the alkali metal cell and the temperature fluctuation inside the cell was also analyzed in this paper. Through simulation analysis, it is found that, within a small temperature fluctuation range (±1°C), the linear relationship between the detected light intensity transmitted through the alkali vapor cell and the temperature fluctuation inside the cell also exists.
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Huining Shang, Kaifeng Yin, Tao Shi, Yan Yin, Jing Wang, Yeguang Yan, Binquan Zhou, and Heng Yuan "Study on temperature fluctuation measurement in alkali vapor cell", Proc. SPIE 11566, AOPC 2020: Optical Spectroscopy and Imaging; and Biomedical Optics, 115660M (5 November 2020); https://doi.org/10.1117/12.2580060
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KEYWORDS
Temperature metrology
Absorption
Potassium
Absorption spectroscopy
Magnetometers
Quantum physics
Optical simulations
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