Study On Ac-Stark Shift Tensor Component Of The Ultrafine Level Of ⁸⁷Rb Atom Ground State

Atomic clocks and atomic magnetometers are highly sensitive and precise measuring devices based on optical pumping effects.As the core component of the global satel-lite navigation system,the accuracy of the atomic clock directly determines the position-ing performance of the navigation system.Magnetometers are widely used in space and geophysics,military anti-submarine,biomedical and other high-precision magnetic field detection.Sensitivity and accuracy are the two most important parameters to measure their performance.The new magnetometers that pursue higher sensitivity and accuracy are magnetic.An important part of instrument research.The Ac-Stark frequency shift is a key factor affecting the measurement accuracy of atomic clocks and atomic magnetometers.Previous researchers have conducted extensive research on scalar and vector components of optical frequency shifts,but there is still no systematic study of optical frequency shift tensor components..With the ever-increasing demands for measurement accuracy in the field of precision measurement,the importance of tensor components in optical frequency shifts is further reflected.This article systematically studies the components of tensor in optical frequency shifts and mainly includes the following contents:First,starting from the simplified three-level model,the corresponding relationship between the Ac-Stark scalar,vector,tensor components and effective Hamiltonian is giv-en.Further,in the case of near resonance,the optical frequency shift of the 0-0 clock tran-sition of the ground state of the superfine level of the D1 line of the germanium atom is calculated.Solve the tensor component of the atomic polarizability,and then focus on the formulation and calculation of the tensor component of the optical frequency shift caused by the Raman transition in the pumping process.Our amendments to the tensor component of the Ac-Stark shift of the helium atom will provide further guidance on the regulation of the optical frequency shift,and it is expected to improve the accuracy and sensitivity of the magnetometer.Second,considering the atomic magnetometer,we performed similar calculations for the Zeeman sublevel M=±1(?)M=±1 transitions.Compare the relationship between the scalar,vector,and tensor components of the optical frequency shift when the polarization states of the light field are circularly polarized light and linearly polarized light,respective-ly.Further,two special wavelength lasers,794.9707 nm and 794.9843 nm,are given,and the scalar component of the optical frequency shift is zero.If the light field is circularly po-larized,at a wavelength of 794.9707 nm,we give a virtual magnetic field modified by the tensor component;if the light field is linearly polarized,when the wavelength is 794.9843 nm,it is caused by the Raman transition in the pumping process.The tensor frequency shift component plays a major role in the optical frequency shift.Finally,for the development of all-optical atomic magnetometers,we propose a dual-beam drive for spontaneous control of virtual RF fields.Calculate the ground state of the D1 line under the hyperfine structure of the 87Rb atom under dual-beam control and modulate the virtual magnetic field,and give a modified virtual magnetic field with the corrected optical frequency shift tensor component.Finally,a new scheme of magnetic resonance driven by the tensor component of optical frequency shift caused by Raman transition is proposed.