Relaxation time dependencies of optically detected magnetic resonance harmonics in highly sensitive M x magnetometers
作者: M. RanjbaranM.M. TehranchiS.M. HamidiS.M.H. Khalkhali
作者单位: 1Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran
2Physics Department, Shahid Beheshti University, Tehran, Iran
3Physics Department, Kharazmi University, Tehran, Iran
刊名: Journal of Magnetism and Magnetic Materials, 2018
来源数据库: Elsevier Journal
DOI: 10.1016/j.jmmm.2018.09.031
关键词: Double resonance atomic magnetometersHarmonic detectionTransverse and longitudinal relaxation timeSensitivity improvement
英文摘要: Abstract(#br)Measurement of extremely weak magnetic fields in double-resonance atomic magnetometers based on resonant optical excitation has been an active area of research in recent years. Magnetometer sensitivity can be improved via detection of higher harmonics of the magnetic resonance, a resonance which has a maximum sensitivity under conditions where the ratio of the amplitude to the line-width of the resonance signal is maximized. Based on the Bloch theorem, we analyze the time evolution of the spin polarization corresponding to each harmonic component of the resonance signal and measure this progression experimentally. Our results revealed that there is an optimal harmonic number for achieving the highest sensitivity. We have shown that the longitudinal and transverse relaxation...
全文获取路径: Elsevier  (合作)
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影响因子:1.826 (2012)

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关键词翻译
关键词翻译
  • resonance 共振
  • magnetic 磁的
  • detected 找到
  • relaxation 松弛
  • improvement 改良
  • longitudinal 纵向的
  • harmonics 低函数
  • atomic 原子的
  • detection 探测
  • sensitive 灵敏的