Chip-scale atomic magnetometer with improved sensitivity by use of the Mx technique

  title={Chip-scale atomic magnetometer with improved sensitivity by use of the Mx technique},
  author={Peter D. D. Schwindt and Brad Lindseth and Svenja Knappe and Vishal Shah and John E. Kitching and Li-Anne Liew},
  journal={Applied Physics Letters},
The fabrication and performance of a miniature optically pumped atomic magnetometer constructed with microfabricated components are discussed. This device measures the spin precession frequency of Rb87 atoms to determine the magnetic field by use of the Mx technique. It has a demonstrated sensitivity to magnetic fields of 5pT∕Hz1∕2 for a bandwidth from 1to100Hz, nearly an order of magnitude improvement over our previous chip-scale magnetometer. The 3dB bandwidth has also been increased to 1kHz… 

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