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Optical bistability from three-level atoms with the use of a coherent nonlinear mechanism

Journal Article · · Phys. Rev. B: Solid State; (United States)
Studies on optical bistability from coherently driven lambda-type three-level atoms in a Fabry-Perot resonator are reported. The nonlinear mechanism relies on transvese optical pumping and is due to population trapping in a coherent superposition of the ground-state sublevels. If,under appropriate conditions, a zero-field level-crossing resonance (Hanle resonance) occurs in the atomic system, the optical device is shown to display dispersive or absorptive bistability. The present theoretical studies are based on numerical solutions of the corresponding three-level Bloch equations in the presence of optical feedback. Experiments are performed on the D-1 line in a sodium-filled Fabry-Perot resonator using transverse optical Zeeman pumping of the (2)S-1/2 ground state. The measurements are found to be in fair agreement with the theoretical predictions from a simple model. 17 references.
Research Organization:
Hannover Universitaet, West Germany
OSTI ID:
6408317
Journal Information:
Phys. Rev. B: Solid State; (United States), Journal Name: Phys. Rev. B: Solid State; (United States) Vol. 29; ISSN PLRBA
Country of Publication:
United States
Language:
English