Title :
Uncooled, millimeter-scale atomic magnetometers with femtotesla sensitivity
Author :
Kitching, John ; Knappe, Svenja ; Griffith, W. Clark ; Preusser, Jan ; Gerginov, Vladislav ; Schwindt, Peter D.D. ; Shah, Vishal ; Jimenez-Marti, Ricardo
Author_Institution :
Time & Freq. Div., NIST, Boulder, CO, USA
Abstract :
We summarize recent results at NIST to develop high-performance yet highly miniaturized magnetic sensors based on atomic vapors confined in microfabricated alkali vapor cells. These sensors currently achieve sensitivities in the range of a few tens of femtotesla in a 1 Hz bandwidth in detection volumes of about 1 mm3. They require no cooling and only a small amount of heating, making them ideal for deployment in remote, power starved locations.
Keywords :
magnetic sensors; magnetometers; microfabrication; NIST; alkali vapor cell microfabrication; atomic vapors; femtotesla sensitivity; frequency 1 Hz; millimeter-scale atomic magnetometers; miniaturized magnetic sensors; power starved locations; Atomic measurements; Biomagnetics; Biosensors; Electrons; Frequency; Instruments; Magnetic field measurement; Magnetic sensors; Magnetometers; Superconducting magnets;
Conference_Titel :
Sensors, 2009 IEEE
Conference_Location :
Christchurch
Print_ISBN :
978-1-4244-4548-6
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2009.5398417