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Title: Four-channel optically pumped atomic magnetometer for magnetoencephalography

Abstract

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.

Authors:
 [1];  [1];  [1];  [1];  [2];  [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Charles Stark Draper Lab., Cambridge, MA (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
National Institutes of Health (NIH); USDOE
OSTI Identifier:
1325716
Report Number(s):
SAND-2016-5979J
Journal ID: ISSN 1094-4087; OPEXFF; 642490
Grant/Contract Number:
AC04-94AL85000
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Optics Express
Additional Journal Information:
Journal Volume: 24; Journal Issue: 14; Journal ID: ISSN 1094-4087
Publisher:
Optical Society of America (OSA)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; coherent optical effects; diffractive optics; polarimetry; Faraday effect; magneto-optic systems; biological sensing and sensors

Citation Formats

Colombo, Anthony P., Carter, Tony R., Borna, Amir, Jau, Yuan -Yu, Johnson, Cort N., Dagel, Amber L., and Schwindt, Peter D. D.. Four-channel optically pumped atomic magnetometer for magnetoencephalography. United States: N. p., 2016. Web. doi:10.1364/OE.24.015403.
Colombo, Anthony P., Carter, Tony R., Borna, Amir, Jau, Yuan -Yu, Johnson, Cort N., Dagel, Amber L., & Schwindt, Peter D. D.. Four-channel optically pumped atomic magnetometer for magnetoencephalography. United States. doi:10.1364/OE.24.015403.
Colombo, Anthony P., Carter, Tony R., Borna, Amir, Jau, Yuan -Yu, Johnson, Cort N., Dagel, Amber L., and Schwindt, Peter D. D.. Wed . "Four-channel optically pumped atomic magnetometer for magnetoencephalography". United States. doi:10.1364/OE.24.015403. https://www.osti.gov/servlets/purl/1325716.
@article{osti_1325716,
title = {Four-channel optically pumped atomic magnetometer for magnetoencephalography},
author = {Colombo, Anthony P. and Carter, Tony R. and Borna, Amir and Jau, Yuan -Yu and Johnson, Cort N. and Dagel, Amber L. and Schwindt, Peter D. D.},
abstractNote = {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/Hz1/2, 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.},
doi = {10.1364/OE.24.015403},
journal = {Optics Express},
number = 14,
volume = 24,
place = {United States},
year = {Wed Jun 29 00:00:00 EDT 2016},
month = {Wed Jun 29 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 7works
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