A5002764585- Atomic and Subatomic Physics Research
- Quantum optics and atomic interactions
- Advanced MRI Techniques and Applications
- Magnetic Field Sensors Techniques
- Magneto-Optical Properties and Applications
- Non-Invasive Vital Sign Monitoring
- Spectroscopy and Laser Applications
- Ionosphere and magnetosphere dynamics
- Inertial Sensor and Navigation
ShanghaiTech University
2021-2025
University of Chinese Academy of Sciences
2023
Shanghai Institute of Microsystem and Information Technology
2023
Optically pumped magnetometers (OPMs) functioning in the spin-exchange relaxation-free (SERF) regime have emerged as attractive options for measuring weak magnetic fields, owing to their portability and remarkable sensitivity. The operation of SERF-OPM critically relies on ambient field; thus, a field compensation device is commonly employed mitigate near zero. Nonetheless, bias OPM may influence impact, subject that remains unexamined. This paper introduced an innovative calibration...
For a spin-exchange relaxation free (SERF) optically pumped magnetometer (OPM) that obtains its best performance in zero magnetic field, an operation environment with approximately field is desired. This article proposes nested compensation system for shielding room (MSR) to suppress the field. Two sets of coils, one set located outside MSR and other placed inside MSR, are combined system. The fields measured by tunneling magnetoresistance (TMR) sensors, while monitored SERF OPMs. two kinds...
The optically pumped magnetometer (OPM) is one of the most sensitive magnetic field sensors, which widely used for ultra-weak measurement. To localize and quantify source, array OPMs are needed to work simultaneously in a small area. As an OPM typically employs modulation field, presence multiple fields interference with each other, resulting reduced measurement accuracy sensitivity. This paper proposes novel setting eliminate mutual field. modulated by group coils, optimized based on...
The most efficient way of improving the sensitivity an optically pumped magnetometer (OPM) is to maximize spin-polarization lifetime, which requires miniaturization magnetic field around sensor. This article proposed a novel method compensation for compact spin-exchange-relaxation-free (SERF) OPM. employs modulation and low-frequency sweeping fields along two directions that are perpendicular laser beam simultaneously. output signal photodiode demodulated at different frequencies, resulting...