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Atomic magnetic gradiometer for room temperature high sensitivity magnetic field detection

Patent 7573264 Issued on August 11, 2009. Estimated Expiration Date: Icon_subject November 27, 2026. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Diode laser-pumped magnetometer
Patent #: 6472869
Issued on: 10/29/2002
Inventor: Upschulte, et al.

High sensitivity atomic magnetometer and methods for using same
Patent #: 7038450
Issued on: 05/02/2006
Inventor: Romalis, et al.

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Patent #: 7053610
Issued on: 05/30/2006
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Remote NMR/MRI detection of laser polarized gases
Patent #: 7061237
Issued on: 06/13/2006
Inventor: Pines, et al.

High sensitivity atomic magnetometer and methods for using same Patent #: 7145333
Issued on: 12/05/2006
Inventor: Romalis, et al.

Inventors

Assignee

Application

No. 11563537 filed on 11/27/2006

US Classes:

324/304Using optical pumping or sensing device

Examiners

Primary: Shrivastav, Brij B.
Assistant: Vaughn, Megann E

Attorney, Agent or Firm

International Class

G01V 3/00

Abstract

A laser-based atomic magnetometer (LBAM) apparatus measures magnetic fields, comprising: a plurality of polarization detector cells to detect magnetic fields; a laser source optically coupled to the polarization detector cells; and a signal detector that measures the laser source after being coupled to the polarization detector cells, which may be alkali cells. A single polarization cell may be used for nuclear magnetic resonance (NMR) by prepolarizing the nuclear spins of an analyte, encoding spectroscopic and/or spatial information, and detecting NMR signals from the analyte with a laser-based atomic magnetometer to form NMR spectra and/or magnetic resonance images (MRI). There is no need of a magnetic field or cryogenics in the detection step, as it is detected through the LBAM.

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