Volume 121, Number 6, March 2018
|Number of page(s)||6|
|Section||Atomic, Molecular and Optical Physics|
|Published online||18 May 2018|
Measurement and cancellation of light shift in optically pumped magnetometers
School of Instrument Science and Opto-electronics Engineering, Beihang University - Beijing 100191, China
Received: 17 March 2018
Accepted: 26 April 2018
Light shift arising from the circularly polarized pump beam in atomic magnetometers can induce an undesired magnetic response, and thus affect their accuracy. Here, the light shift and the corresponding cross-talk effect in the magnetometer have been investigated, and a scheme with an additional off-resonant pump beam with an appropriate polarization and intensity has been proposed to effectively reject the light shift. And the experimental results reproduce the expected behavior. This scheme provides a powerful tool to reject the light shift in optical pumping systems, in particular, the hybrid optically pumped systems.
PACS: 32.60.+i – Zeeman and Stark effects / 07.55.Ge – Magnetometers for magnetic field measurements / 32.80.Xx – Level crossing and optical pumping
© EPLA, 2018
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