Shape of the coherent-population-trapping resonances and high-rank polarization moments

Journal Article · Wed Aug 15 00:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.76.025401· OSTI ID:21016070

Gateva, S; Petrov, L; Alipieva, E; Todorov, G; Domelunksen, V; Polischuk, V ^[1]

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1. Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee, 1784 Sofia (Bulgaria)

The shape of the coherent-population-trapping (CPT) resonances was investigated theoretically and experimentally at different laser powers. The CPT resonances were observed in fluorescence on the degenerate two-level system of the (F{sub {phi}}=2{yields}F{sub f}=1) transition of the {sup 87}Rb D{sub 1} line by means of a Hanle effect configuration in an uncoated vacuum cell. Numerical simulations based on the density matrix formalism, which take into account the high-rank polarization moment (HRPMs) influence and the velocity distribution of the atoms, were used to calculate the shape of the nonlinear magnetic resonances. The comparison of the theoretical and experimental shapes of the CPT resonances demonstrated that the HRPMs influence the shape at all laser excitation powers, and this influence can be used to explain some peculiarities at the center of the CPT resonance shape.

• OSTI ID: 21016070
• Journal Information: Physical Review. A, Vol. 76, Issue 2; Other Information: DOI: 10.1103/PhysRevA.76.025401; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
COMPARATIVE EVALUATIONS
CONFIGURATION
DENSITY MATRIX
DISTRIBUTION
EXCITATION
FLUORESCENCE
LASER RADIATION
MAGNETIC RESONANCE
NONLINEAR PROBLEMS
PHOTON-ATOM COLLISIONS
POLARIZABILITY
POLARIZATION
POPULATION INVERSION
RADIATION PRESSURE
RUBIDIUM 87
SIMULATION
TRAPPING