Four-channel optically pumped atomic magnetometer for magnetoencephalography

Colombo, Anthony P.; Carter, Tony R.; Borna, Amir; Jau, Yuan -Yu; Johnson, Cort N.; Dagel, Amber L.; Schwindt, Peter D. D.

doi:10.1364/OE.24.015403

Title: Four-channel optically pumped atomic magnetometer for magnetoencephalography

Journal Article · Wed Jun 29 00:00:00 EDT 2016 · Optics Express

DOI:https://doi.org/10.1364/OE.24.015403· OSTI ID:1325716

Colombo, Anthony P. ^[1]; Carter, Tony R. ^[1]; Borna, Amir ^[1]; Jau, Yuan -Yu ^[1]; Johnson, Cort N. ^[2]; Dagel, Amber L. ^[1]; Schwindt, Peter D. D. ^[1]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Charles Stark Draper Lab., Cambridge, MA (United States)

We have developed a four-channel optically pumped atomic magnetometer for magnetoencephalography (MEG) that incorporates a passive diffractive optical element (DOE). The DOE allows us to achieve a long, 18-mm gradiometer baseline in a compact footprint on the head. Using gradiometry, the sensitivities of the channels are < 5 fT/Hz^1/2, and the 3-dB bandwidths are approximately 90 Hz, which are both sufficient to perform MEG. Additionally, the channels are highly uniform, which offers the possibility of employing standard MEG post-processing techniques. As a result, this module will serve as a building block of an array for magnetic source localization.

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Research Organization:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: National Institutes of Health (NIH); USDOE

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1325716

Report Number(s):: SAND-2016-5979J; OPEXFF; 642490

Journal Information:: Optics Express, Vol. 24, Issue 14; ISSN 1094-4087

Publisher:: Optical Society of America (OSA)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 86 works

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Non-Invasive Functional-Brain-Imaging with an OPM-based Magnetoencephalography System Borna, Amir; Carter, Tony R.; Colombo, Anthony P. PLOS ONE, Vol. 15, Issue 1 https://doi.org/10.1371/journal.pone.0227684	journal	January 2020

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