DocumentCode :
2656122
Title :
Application of precision engineering in laser transverse pumping 133Cs brain magnetometers
Author :
Watanabe, Takaya
Author_Institution :
World Technol. Instrum. Co., Ltd., Yokohama, Japan
fYear :
2011
fDate :
2-5 May 2011
Firstpage :
1
Lastpage :
6
Abstract :
The transverse relaxation time of the laser pumping of 133Cs atomic vaporing. Even if the temperature rises, the extension of the energy distribution of the electron is suppressed the effect of a thermal extension by the quantization and can lower the oscillation threshold to the quantum-dot structure of the VCSEL without causing the decrease in the gain to the utmost limit. The design of the system that measures the brain magnetism at 100fT level. The cause brain magnetic field from 10-13T to 10-14T or more can be detected.
Keywords :
brain; laser applications in medicine; magnetic fields; magnetometers; optical pumping; quantum dots; surface emitting lasers; VCSEL; atomic vaporing; brain magnetometers; energy distribution; laser pumping; laser transverse pumping; quantum-dot structure; thermal extension; Laser excitation; Magnetic fields; Magnetic noise; Magnetic resonance imaging; Magnetic shielding; Saturation magnetization; Vertical cavity surface emitting lasers;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Frequency Control and the European Frequency and Time Forum (FCS), 2011 Joint Conference of the IEEE International
Conference_Location :
San Fransisco, CA
ISSN :
1075-6787
Print_ISBN :
978-1-61284-111-3
Type :
conf
DOI :
10.1109/FCS.2011.5977270
Filename :
5977270
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=2656122
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