Aiming at requirement of non-magnetic heating for atomic vapor cell of atomic magnetic sensor and solving the problem of low signal-to-noise ratio（ SNR） of resonant spectrum signal of magnetometer

a method of differential pair wiring is used and a square copper non-magnetic heating coil is fabricated on a ceramic substrate by adopting a micro-machined film process. Steady-state magnetic field intensity distribution of the coil is analyzed by COMSOL Multiphysics under 2. 2mA DC condition and combined with copper vapor cell fixed bracket model and thermal simulation analysis result from Pro/Engineer software are used to obtain the ideal heating position.Further analyze and determine on 20 kHz AC current heating program and complete non-magnetic heater with 3 W heating power and temperature control precision of 0. 1 ℃. The experimental results show that the instantaneous magnetic disturbance of the heater is 2. 24 pT

which satisfies the non-magnetic heating requirement of atomic vapor cell

and the result has reference meaning for vapor cell design and optimization of operation parameters of atomic magnetic sensor.