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|Author(s):||Ricardo Jimenez Martinez; William C. Griffith; Svenja A. Knappe; John E. Kitching; Mark Prouty;|
|Title:||High Bandwidth Optical Magnetometer|
|Published:||November 28, 2012|
|Abstract:||We demonstrate a scalar 87Rb optical magnetometer that retains magnetic eld sensitivities below 10 pT/√Hz over 3dB bandwidths of 10 kHz in an ambient eld Bo = 11.4 microT and using a measurement volume of 1 mm3. The magnetometer operates at high atomic densities where both the sensitivity and bandwidth are limited by spin-exchange collisions between the alkali atoms. By operating in this regime our measurements show that the bandwidth of the magnetometer can be increased without a significant degradation in its sensitivity. The projected photon shot noise-limited sensitivity for the experimental parameters is 1 pT/√Hz, while the fundamental atom shot noise limit is 150 fT/√Hz.|
|Citation:||The Journal of Optical Society of America B|
|Pages:||pp. 3395 - 3403|
|Keywords:||Laser spectroscopy,Optical magnetometry,Optical pumping|
|PDF version:||Click here to retrieve PDF version of paper (475KB)|