Title: Atomic magnetic gradiometer for room temperature high sensitivity magnetic field detection

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.

Inventors:

Xu, Shoujun ^[1]; Lowery, Thomas L ^[2]; Budker, Dmitry ^[3]; Yashchuk, Valeriy V ^[4]; Wemmer, David E ^[1]; Pines, Alexander ^[1]

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+ Show Inventor Affiliations

1. Berkeley, CA
2. Belmont, MA
3. El Cerrito, CA
4. Richmond, CA

Issue Date:

2009-08-11

Research Org.:

Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1013689

Patent Number(s):

7573264

Application Number:

11/563,537

Assignee:

The Regents of the University of California (Oakland, CA)

Patent Classifications (CPCs):

G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES

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G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES

G01R33/26 - using optical pumping {

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DOE Contract Number:  

AC02-05CH11231

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

47 OTHER INSTRUMENTATION