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Experimental evaluation of temperature distribution of a vapor cell using a Hilbert transform procedure

  • He Cai (a1), You Wang (a1), Ming Gao (a1), Wei Zhang (a1), Zhigang Jiang (a1), Juhong Han (a1), Guofei An (a1), Shunyan Wang (a1), Liangping Xue (a1), Hongyuan Wang (a1) and Jie Zhou (a1)...

Abstract

A diode-pumped alkali vapor laser (DPAL) is one of the most promising candidates of the next-generation high-powered laser source. As the saturated number density of alkali vapor is highly dependent on the temperature inside a vapor cell, the temperature distribution in the cross-section of a cell will greatly affect the homogeneity of a laser medium and the output characteristics of a DPAL. In this paper, we developed an algorithm based on the regime concluding quasi-Hilbert transform to evaluate the phase aberration of a wavefront when the probe beam passes through the vapor cell placed in one arm of a Mach–Zehnder interference setup. According to the theoretical algorithm, we deduced the temperature distribution of a cesium vapor cell for different heating conditions. The study is thought to be useful for development of a high-powered laser.

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Copyright

This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.

Corresponding author

Correspondence to: Y. Wang, Southwest Institute of Technical Physics, Renmin South Road 4-7, Chengdu, Sichuan 610041, China. Email: youwang_2007@aliyun.com

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