Four-channel optically pumped atomic magnetometer for magnetoencephalography

被引：129

作者：

Colombo, Anthony P. ^{[1
]}

Carter, Tony R. ^{[1
]}

Borna, Amir ^{[1
]}

Jau, Yuan-Yu ^{[1
]}

Johnson, Cort N. ^{[1
,2
]}

Dagel, Amber L. ^{[1
]}

Schwindt, Peter D. D. ^{[1
]}

机构：

[1] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA

[2] Charles Stark Draper Lab, 555 Technol Sq, Cambridge, MA 02139 USA

来源：

OPTICS EXPRESS | 2016年 / 24卷 / 14期

基金：

美国国家卫生研究院;

关键词：

FETAL MAGNETOCARDIOGRAPHY; ARRAY; FIELDS;

D O I：

10.1364/OE.24.015403

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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. This module will serve as a building block of an array for magnetic source localization. (C) 2016 Optical Society of America

引用

页码：15403 / 15416

页数：14

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