• Semiconductor Optoelectronics
  • Vol. 44, Issue 4, 575 (2024)
LIU Yanyan1,2,3, ZHU Jing1,2,3, TAN Zhicheng1,2,3, LIU Xiaofei4..., WANG Shuai5 and ZHU Lianqing1,2,3|Show fewer author(s)
Author Affiliations
  • 1Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing 100192, CHN
  • 2Beijing Laboratory of Optical Fiber Sensing and System, Beijing Information Science and Technology University, Beijing 100016, CHN
  • 3Guangzhou Nansha Intelligent Photonic Sensing Research Institute, Guangzhou 511462, CHN
  • 4Beijing Aerospace Measurement and Control Technology Co., Ltd, Beijing 100041, CHN
  • 5School of Instrument Science and Opto-electronics Engineering, Hefei University of Technology, Hefei 230009, CHN
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    DOI: 10.16818/j.issn1001-5868.2024030301 Cite this Article
    LIU Yanyan, ZHU Jing, TAN Zhicheng, LIU Xiaofei, WANG Shuai, ZHU Lianqing. Optimal Design of Heater with Magnetic Field Self-suppression Based on Genetic Algorithm[J]. Semiconductor Optoelectronics, 2024, 44(4): 575 Copy Citation Text show less

    Abstract

    The ultra-low magnetic noise (<10 nT) of alkali metal heating technique is critical for achieving ultra-high sensitivity in spin-exchange relaxation-free atomic magnetometers. In this study, a multi-objective optimization and design method for a magnetic-field self-suppression heater based on a genetic algorithm was proposed. A novel objective function model based on the Biot-Savart law was derived, and four types of parameters were used for the optimization objectives (a total of 18), including the length, width, thickness, and current direction of the heating wire, in order to obtain the best magnetic self-suppression performance from the heater. Using the finite element analysis method, the magnetic field distribution and temperature distribution in the target region were simulated and analyzed, and the results showed that the heater produced an average magnetic field of 0.02 nT/mA and an average temperature of 180.34 ℃ in the center of the target region. Experimental tests confirmed that the magnetic flux density in the target region fell within the range of 0.13~0.14 nT/mA, which indicated that the heater had a better self-suppressing performance for the magnetic field. This work contributes to further enhancing the performance of atomic magnetometers.
    LIU Yanyan, ZHU Jing, TAN Zhicheng, LIU Xiaofei, WANG Shuai, ZHU Lianqing. Optimal Design of Heater with Magnetic Field Self-suppression Based on Genetic Algorithm[J]. Semiconductor Optoelectronics, 2024, 44(4): 575
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