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[5] 张书练. 正交偏振原理[M]. 北京: 清华大学出版社, 2005: 141~150.

Zhang Shulian. Principle of Orthogonal Polarization Laser[M]. Beijing: Tsinghuam University Press, 2005: 141-150. (in Chinese)
[6] Li Yan, Fu Jie, Han Yanmei. Intensity tuning characteristics of a frequency splitting he-ne laser [J]. Laser & Infrared, 2000, 30(1): 30-32. (in Chinese) doi:  10.3969/j.issn.1001-5078.2000.01.010
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Zhu Shoushen. Key technologies and system of birefringence-Zeeman dual-frequency HeNe laser[D]. Beijing: Tsinghua University, 2013: 55-57. (in Chinese)
[9] Ren Libin, Ding Yingchun, Zhou Lufei, et al. Mid-frequency difference He-Ne Z-B laser with elastic force-exerting and its frequency [J]. Infrared and Laser Engineering, 2008, 37(5): 814-817, 825. (in Chinese)
[10] 张书练, 丁迎春, 谈宜东. 激光器和激光束 [M]. 北京: 清华大学出版社, 2021: 338-339.

Zhang Shulian, Ding Yingchun, Tan Yidong. Laser and Laser Beams[M]. Beijing: Tsinghuam University Press, 2021: 338-339. (in Chinese)