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Title: A high-sensitivity tunable two-beam fiber-coupled high-density magnetometer with laser heating

Atomic magnetometers (AM) are finding many applications in biomagnetism, national security, industry, and science. Fiber-coupled (FC) designs promise to make them compact and flexible for operation. Most FC designs are based on a single-beam configuration or electrical heating. Here, we demonstrate a two-beam FC AM with laser heating that has 5 fT/Hz 1/2 sensitivity at low frequency (50 Hz), which is higher than that of other fiber-coupled magnetometers and can be improved to the sub-femtotesla level. Here, this magnetometer is widely tunable from DC to very high frequencies (as high as 100 MHz; the only issue might be the application of a suitable uniform and stable bias field) with a sensitivity under 10 fT/Hz 1/2 and can be used for magneto-encephalography (MEG), magneto-cardiography (MCG), underground communication, ultra-low MRI/NMR, NQR detection, and other applications.
Authors:
ORCiD logo [1] ; ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Report Number(s):
LA-UR-15-24035
Journal ID: ISSN 1424-8220; SENSC9
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Sensors
Additional Journal Information:
Journal Volume: 16; Journal Issue: 10; Journal ID: ISSN 1424-8220
Publisher:
MDPI AG
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Laboratory Directed Research and Development (LDRD) Program
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; atomic and nuclear physics; atomic magnetometers; low-frequency; high sensitivity
OSTI Identifier:
1351185

Savukov, Igor Mykhaylovich, and Boshier, Malcolm Geoffrey. A high-sensitivity tunable two-beam fiber-coupled high-density magnetometer with laser heating. United States: N. p., Web. doi:10.3390/s16101691.
Savukov, Igor Mykhaylovich, & Boshier, Malcolm Geoffrey. A high-sensitivity tunable two-beam fiber-coupled high-density magnetometer with laser heating. United States. doi:10.3390/s16101691.
Savukov, Igor Mykhaylovich, and Boshier, Malcolm Geoffrey. 2016. "A high-sensitivity tunable two-beam fiber-coupled high-density magnetometer with laser heating". United States. doi:10.3390/s16101691. https://www.osti.gov/servlets/purl/1351185.
@article{osti_1351185,
title = {A high-sensitivity tunable two-beam fiber-coupled high-density magnetometer with laser heating},
author = {Savukov, Igor Mykhaylovich and Boshier, Malcolm Geoffrey},
abstractNote = {Atomic magnetometers (AM) are finding many applications in biomagnetism, national security, industry, and science. Fiber-coupled (FC) designs promise to make them compact and flexible for operation. Most FC designs are based on a single-beam configuration or electrical heating. Here, we demonstrate a two-beam FC AM with laser heating that has 5 fT/Hz1/2 sensitivity at low frequency (50 Hz), which is higher than that of other fiber-coupled magnetometers and can be improved to the sub-femtotesla level. Here, this magnetometer is widely tunable from DC to very high frequencies (as high as 100 MHz; the only issue might be the application of a suitable uniform and stable bias field) with a sensitivity under 10 fT/Hz1/2 and can be used for magneto-encephalography (MEG), magneto-cardiography (MCG), underground communication, ultra-low MRI/NMR, NQR detection, and other applications.},
doi = {10.3390/s16101691},
journal = {Sensors},
number = 10,
volume = 16,
place = {United States},
year = {2016},
month = {10}
}