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Paper Abstract and Keywords
Presentation 2010-05-21 13:50
Development of an ultrasensitive optically-pumped atomic magnetometer for biomagnetic measurements -- Studies on dependence of sensitivity and bandwidth on operating conditions --
Keigo Kamada, Shuji Taue (Kyoto Univ.), Kiyoshi Ishikawa (Univ. of Hyogo), Tetsuo Kobayashi (Kyoto Univ.) MBE2010-3
Abstract (in Japanese) (See Japanese page) 
(in English) We have developed an ultrasensitive optically-pumped atomic magnetometer for biomagnetic measurements such as magnetoencephalograms and magnetocardiograms. The characteristics of the magnetometer depend on various operating parameters such as intensity and wavelength of lasers. By focusing on a transverse spin relaxation time, we theoretically and experimentally studied the dependence of the sensitivity and bandwidth of our atomic magnetometer on these parameters. Measured data indicated that bandwidth depended mostly on pump laser intensity. Subsequently, pseudo-magnetocardiograms generated by a Helmholtz coil were measured and compared the time profiles between applied currents and measured signals. It was found that we could recover the original profiles by the inverse filtering of distorted signals.
Keyword (in Japanese) (See Japanese page) 
(in English) Atomic magnetometer / Biomagnetic measurement / Transverse spin relaxation time / / / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 52, MBE2010-3, pp. 13-18, May 2010.
Paper # MBE2010-3 
Date of Issue 2010-05-14 (MBE) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee MBE  
Conference Date 2010-05-21 - 2010-05-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Toyama Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) ME in general 
Paper Information
Registration To MBE 
Conference Code 2010-05-MBE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Development of an ultrasensitive optically-pumped atomic magnetometer for biomagnetic measurements 
Sub Title (in English) Studies on dependence of sensitivity and bandwidth on operating conditions 
Keyword(1) Atomic magnetometer  
Keyword(2) Biomagnetic measurement  
Keyword(3) Transverse spin relaxation time  
1st Author's Name Keigo Kamada  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Shuji Taue  
2nd Author's Affiliation Kyoto University (Kyoto Univ.)
3rd Author's Name Kiyoshi Ishikawa  
3rd Author's Affiliation University of Hyogo (Univ. of Hyogo)
4th Author's Name Tetsuo Kobayashi  
4th Author's Affiliation Kyoto University (Kyoto Univ.)
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Date Time 2010-05-21 13:50:00 
Presentation Time 25 
Registration for MBE 
Paper # IEICE-MBE2010-3 
Volume (vol) IEICE-110 
Number (no) no.52 
Page pp.13-18 
#Pages IEICE-6 
Date of Issue IEICE-MBE-2010-05-14 

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