Three-axis atomic vector magnetic field measurement device with double pumped beams based on serf

Abstract

The invention discloses a double-pumping-beam three-axis atom vector magnetic field measuring device based on SERF. Pumping can be carried out at different parts of the same gas chamber; therefore, high-sensitivity three-axis atom vector magnetic field measurement can be realized simultaneously in one gas chamber. The device comprises an alkali metal gas chamber, and is characterized in that the alkali metal gas chamber is of an L-shaped structure, the L-shaped structure comprises a left upper block, a right upper block and a left lower block, the right lower part is a vacancy part in the right lower, a first pumping light beam irradiation channel is in the X-axis direction of the upper right block, a second pumping light beam irradiation channel is in the Z-axis direction of the lower left block, the upper left block is not irradiated by the pumping light beams, and the first pumping light beam and the second pumping light beam intersect at the lower right vacancy part.

Description

technical field [0001] The invention relates to atomic magnetometer technology, in particular to a SERF-based double-pumped beam three-axis atomic vector magnetic field measurement device, which can be pumped in different parts of the same gas chamber by setting an L-shaped alkali metal gas chamber. Thus, it is beneficial to simultaneously realize the measurement of the high-sensitivity three-axis atomic vector magnetic field under one air cell. SERF is the abbreviation of Spin-Exchange-Relaxation-Free, that is, no spin exchange relaxation, and SERF is a general term in the field. Background technique [0002] In recent years, as humans have made progress in key theories and technologies such as laser technology and atomic manipulation, the application of quantum technology has received unprecedented attention and has become a research hotspot around the world. In the field of magnetic field measurement, the relaxation atom magnetometer without spin exchange can significant...

AI Technical Summary

Problems solved by technology

Using the method of transverse modulation or longitudinal modulation, using two gas chambers or measuring at different times can realize high-sensitivity three-axis vector magnetic field measurement, but it is easy to introduce quadrature error and cannot be continuously measured

Due to the insensitivity of the magnetometer response to the magnetic field in the polarization direction of atoms, it is impossible to use a gas cell to simultaneously achieve ultra-high sensitivity measurement of three-axis vector magnetic fields

At present, it is difficult to realize the measurement of ultra-high sensitivity three-axis vector magnetic field under one gas chamber at the same time.

Images