The invention relates to a measurement method and device of a Bell-Bloom self-modulation three-axis
magnetic field. A conventional Bell-Bloom
magnetometer utilizes a
single beam to measure a scalar
magnetic field, is simple in structure, is high in measurement accuracy and is widely applied to measurement of various scalar magnetic fields. The single-beam Bell-Bloom
magnetometer can only measure the scalar magnetic fields, but three-axis
magnetic field information is needed in many places in scientific researches and production life, and then a vector
magnetometer is needed. Based on the single-beam Bell-Bloom magnetometer, the measurement method and device of the Bell-Bloom self-modulation three-axis magnetic field realize measurement of the three-axis magnetic field by utilizing the self-modulating action on detection light of atomic procession. Compared with the common vector magnetometer, the
measurement device of the Bell-Bloom self-modulation three-axis magnetic field is not provided with a
radio frequency coil or a magnetic shielding
barrel, thereby having a simple light path, being compact in structure and achieving
miniaturization and integration easily; the
measurement device is low in
heating temperature and needs fewer electric elements, so that systematic
power consumption is lowered and operation conditions are met more easily; the
measurement device utilizes the self-modulating action on detection light of the atomic procession, is lower in
noise and is high in detection accuracy.