Microfabricated atomic magnetometers and applications

@article{Kitching2008MicrofabricatedAM,
  title={Microfabricated atomic magnetometers and applications},
  author={John Kitching and Svenja Knappe and Vishal Shah and Peter D. D. Schwindt and Clark Griffith and Ralph Jimenez and Jan Preusser and Li-Anne Liew and John M. Moreland},
  journal={2008 IEEE International Frequency Control Symposium},
  year={2008},
  pages={789-794}
}
We describe recent work at NIST to develop compact, sensitive atomic magnetometers using a combination of precision optical spectroscopy, atomic physics and techniques of micro-electro-mechanical systems (MEMS). These instruments have sensor head volumes in the range of a few cubic millimeters but are capable of sensing magnetic fields of a few picotesla per root-hertz in the earthpsilas field and as weak as 70 femtotesla per root-hertz in a shielded, low-field environment. We discuss the… Expand

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References

SHOWING 1-10 OF 32 REFERENCES
Chip Scale Atomic Magnetometers
An optically pumped magnetometer was drastically miniaturized, by taking advantage of MEMS techniques, producing the chip-scale atomic magnetometers (CSAM) physics package. The key component of theExpand
Chip-scale atomic magnetometer with improved sensitivity by use of the Mx technique
The fabrication and performance of a miniature optically pumped atomic magnetometer constructed with microfabricated components are discussed. This device measures the spin precession frequency ofExpand
Chip-scale atomic magnetometer
We report recent improvements on our microfabricated atom-optical magnetometer. Using a semiconductor laser and 1 mm<sup>3</sup> alkali vapor cell, our magnetometer detects a magnetic field at 50 pTExpand
A subfemtotesla multichannel atomic magnetometer
TLDR
A new spin-exchange relaxation-free (SERF) atomic magnetometer is described, and theoretical analysis shows that fundamental sensitivity limits of this device are below 0.01 fT Hz-1/2, which would enable new applications, including the possibility of mapping non-invasively the cortical modules in the brain. Expand
A microfabricated atomic clock
Fabrication techniques usually applied to microelectromechanical systems (MEMS) are used to reduce the size and operating power of the core physics assembly of an atomic clock. With a volume ofExpand
Picotesla magnetometry with coherent dark states
We investigate the experimental sensitivity limit of a scalar optical magnetometer based on coherent population trapping on the D2 line of a thermal cesium vapor. We find the expected strongExpand
Microfabricated alkali atom vapor cells
We describe the fabrication of chip-sized alkali atom vapor cells using silicon micromachining and anodic bonding technology. Such cells may find use in highly miniaturized atomic frequencyExpand
Zero-field remote detection of NMR with a microfabricated atomic magnetometer
TLDR
Remote detection of nuclear magnetic resonance (NMR) with a microchip sensor consisting of a microfluidic channel and a microfabricated vapor cell is demonstrated, which allows operation of the magnetometer in the spin-exchange relaxation-free (SERF) regime and increases the proximity of sensor and sample by eliminating the need for a solenoid to create a leading field. Expand
Hyperpolarized xenon nuclear spins detected by optical atomic magnetometry.
TLDR
An atomic magnetometer based on nonlinear magneto-optical rotation with frequency-modulated light to detect nuclear magnetization of xenon gas and appears to be ideally suited for emerging low-field and remote-detection magnetic resonance applications. Expand
Atomic vapor cells for chip-scale atomic clocks with improved long-term frequency stability.
TLDR
A novel technique for microfabricating alkali atom vapor cells is described in which alkali atoms are evaporated into a micromachined cell cavity through a glass nozzle, and the hyperfine frequency of atoms in these cells is below 5 x 10(-11)/day. Expand
...
1
2
3
4
...