A high-sensitivity single-light-source triaxial atomic magnetometer with double-cell and orthogonally pumped...

Area of Science:

• Atomic physics
• Magnetometry
• Sensor technology

Background:

• Atomic magnetometers offer high sensitivity for magnetic field detection.
• Measuring magnetic fields in three dimensions typically requires complex multi-sensor setups.

Purpose of the Study:

• To report a novel single-light-source orthogonally pumped triaxial atomic magnetometer.
• To demonstrate a double-cell structure for enhanced magnetic field sensing capabilities.

Main Methods:

• Utilized a single light source and a beam splitter for orthogonal pumping.
• Employed a double-cell structure to enable simultaneous detection of magnetic fields along x, y, and z axes.
• Characterized system sensitivity and bandwidth for each direction.

Main Results:

• Achieved a sensitivity of 22 fT/Hz^1/2 in the x-direction with a 22 Hz bandwidth.
• Achieved a sensitivity of 23 fT/Hz^1/2 in the y-direction with a 23 Hz bandwidth.
• Achieved a sensitivity of 21 fT/Hz^1/2 in the z-direction with a 25 Hz bandwidth.

Conclusions:

• The developed triaxial atomic magnetometer effectively measures magnetic fields in three dimensions.
• The single-light-source design offers a simplified and potentially more cost-effective solution for 3-axis magnetic field measurements.
• This technology is suitable for applications requiring comprehensive magnetic field vector determination.