Abstract:The error caused by light shift has a significant impact on atomic gyroscopes. In order to suppress the error in compact atomic gyroscopes, we put forward a light shift suppression method based on the optimization of the pump light frequency. Firstly, it is demonstrated theoretically and experimentally that the symmetry of the electronic resonance curve is influenced by the light shift. Therefore, we proposed to optimize light frequency to obtain the symmetric resonance curve, and at this point, the pumping light shift error can be suppressed. Finally, the effectiveness of the method is proved theoretically and experimentally. Because the electronic resonance curve is easy to obtain in the experiment and no extra components are required, this method is intuitive and convenient in operation, thus it is appropriate to be implemented in compact atomic gyroscopes.