Pulsed atomic magnetometer in an unshielded environment

by Dr. Andrei Ben-Amar Baranga

Ben-Gurion University Of The Negev

at Quantum optics seminar

Wed, 17 Apr 2019, 15:00
Sacta-Rashi Building for Physics (54), room 207

Abstract

High sensitive magnetometers operating close to DC have a broad range of applications and are in high demand. All-optical magnetometers such as SERF atomic magnetometer have proved their record sensitivity and applications’ capabilities since 2002. However, their main drawback is the requirement of passive and active magnetic shielding, limiting drastically their application span.
We developed and patented a novel methodology to measure minute changes in ambient magnetic field. A sensitivity of less than 1 pT/sqrt(Hz) at 1 Hz has been demonstrated using a Cesium unshielded pulsed optical scalar magnetometer operated at 1 kHz of 170 ns pump pulses and 5s data acquisition time. The demonstrated dynamic range of our magnetometer is 0.1 – 500 Hz at ~40 mTesla ambient field, almost independent of temperature and signal amplitude.

Created on 14-04-2019 by Folman, Ron (folman)
Updaded on 14-04-2019 by Folman, Ron (folman)