Open AccessMagneto-optical double resonance driven by fictitious fields
Author(s) -
Zili Lin,
Xiang Peng,
Wenhao Li,
Haidong Wang,
Hong Guo
Publication year - 2017
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.007668
Subject(s) - physics , zeeman effect , larmor precession , electric field , magnetic field , circular polarization , polarization (electrochemistry) , metastability , amplitude , light field , linear polarization , hamiltonian (control theory) , atomic physics , stark effect , resonance (particle physics) , optics , quantum mechanics , chemistry , mathematical optimization , laser , mathematics
Light-shift caused by the interaction between atoms and detuned light can be equivalent to the phenomena that atoms are coupled to an external magnetic or electric field. A fictitious magnetic or electric field is used to describe the effect of light-shift. Whether fictitious magnetic or electric field should be used depends on the polarization state of the detuned light. The fictitious fields can shift Zeeman sublevels and excite transitions between different sublevels. We study the magneto-optical double resonance of optically polarized 4 He atoms driven by the detuned light with either circular or linear polarization states, model the light-shift with effective Hamiltonian, and the polarized 4 He metastable state with density matrix calculations. Our proposed theoretical explanations based on the fictitious fields show good agreement with experimental results, especially for amplitude and frequency shifts of the signals at Larmor frequency and double Larmor frequency driven by the fictitious electric field.