Solitary Line of Double Radio-Optical Magnetic Resonance in Atoms of 87Rb

Theoretical and experimental study of influence of quadratic Zeeman effect on the structure of double radio-optical resonance is presented. A specific transition in 87Rb atom is considered in the case of excitation with linearly polarized laser radiation and detection of the signal at the second harmonic of the AC magnetic field frequency. It is shown, that for small magnetic fields the magnetic resonance consists of a solitary line similarly to resonance in potassium [1]. However, for magnetic fields greater than 50 μT the line acquires two additional side-peaks without breaking its symmetry and changingposition of resonance center. The described scheme can be used in magnetometry.