Harmonic detection of magnetic resonance for sensitivity improvement of optical atomic 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, 2017, Vol.424 , pp.284-290
来源数据库: Elsevier Journal
DOI: 10.1016/j.jmmm.2016.10.058
关键词: Atomic magnetometersBloch equationsHarmonic detection of magnetic resonance
原始语种摘要: Abstract(#br)Highly sensitive atomic magnetometers use optically detected magnetic resonance of atomic spins to measure extremely weak magnetic field changes. The magnetometer sensitivity is directly proportional to the ratio of intensity to line-shape of the resonance signal. To obtain narrower resonance signal, we implemented harmonic detection of magnetic resonance method in M x configuration. The nonlinear spin polarization dynamics in detection of the higher harmonics were employed in phenomenological Bloch equations. The measured and simulated harmonic components of the resonance signals in frequency domain yielded significantly narrower line-width accompanying much improved sensitivity. Our results confirm the sensitivity improvement by a factor of two in optical atomic...
全文获取路径: Elsevier  (合作)
影响因子:1.826 (2012)

  • resonance 共振
  • magnetic 磁的
  • atomic 原子的
  • detection 探测
  • improvement 改良
  • harmonic 谐波
  • magnetometer 地磁仪
  • sensitivity 灵敏度
  • narrower 收针装置
  • proportional 成比例的