Electron polarizability biaxial in-situ measurement system and method of SERF atom magnetometer

Abstract

The invention discloses an electron polarizability biaxial in-situ measurement system and method of the SERF atom magnetometer. A first polarization splitting prism which divides laser emitted by a detection laser into two parts is arranged in a detection laser module, and the first beam of detection laser penetrates through an alkali metal gas chamber along the X axis so as to measure electron polarizability information of a detection axis; after being coupled with pumping light formed by the pumping laser module, a second beam of detection laser passes through the alkali metal gas chamber along the Z axis to measure the electron polarizability information of the pumping axis, and the electron polarizability Px of the detection axis is measured in situ by measuring the rotation angle thetax in the X-axis direction; according to the pumping axis electron polarizability Pz, in-situ measurement is achieved by measuring the Z-axis direction rotation angle thetaz, online measurement of alkali metal electron biaxial polarizability can be completed when the SERF atom magnetometer works normally, and the measurement efficiency is improved.

Description

technical field [0001] The invention relates to SERF atomic magnetometer measurement technology, in particular to a SERF atomic magnetometer SERF atomic magnetometer electronic polarizability dual-axis in-situ measurement system and method, by setting the detection laser module in the detection laser module to emit The laser beam is divided into two by the first polarization beam splitter prism, wherein the first detection laser beam passes through the alkali metal gas chamber along the X axis (detection axis) to measure the electronic polarizability information of the detection axis, the second detection laser beam and the pumping laser The pumping light formed by the module is coupled and passes through the alkali metal gas chamber along the Z axis (pumping axis) to measure the electronic polarizability information of the pumping axis. The measurement of θx realizes the in-situ measurement, and the pumping axis electronic polarizability Pz realizes the in-situ measurement by...

AI Technical Summary

Problems solved by technology

At present, the commonly used alkali metal electron polarizability measurement devices are based on the SERF atomic magnetometer SERF atomic magnetometer, which is difficult to use due to the use of near-resonant light to pump the alkali metal atoms, and the pumping light is almost completely absorbed by the alkali metal Pump light information measurement of electron polarizability in the direction of the pump axis

In addition, the commonly used alkali metal electronic polarizability measurement methods generally can only measure uniaxial electronic polarizability information, and cannot simultaneously measure biaxial electronic polarizability information.

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