Spatial solitary like weak probe wave in the three-level Λ-type atoms

Journal Article · Mon Jul 01 04:00:00 EDT 2019 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.5091159· OSTI ID:22946885

Stevanović, Ljiljana; Maluckov, Aleksandra; Filipović, Nikola; Pavlović, Vladan

We study the interaction of the medium composed of three-level atoms in A configuration interacting with two laser fields: weak probe field and strong control field. The probe field enters the medium under a certain angle, and it is initially in the form of the spatial soliton, while the control field is periodically modulated. The system of optical Bloch equations is analytically solved in the stationary regime by the perturbation method in order to obtain linear and third-order nonlinear susceptibility of the medium with respect to the probe field. After a straightforward algebraic procedure, using the approximation of the slow-varying field envelope, the nonlinear Schrödinger equation for the probe field is obtained. It is numerically solved by applying the spectral Fourier split-step method. It is found that, for properly chosen values of the probe and control field detunings and control Rabi frequency, the probe field behaves as a solitary wave whose direction does not depend on the incident angle. Moreover, the regime consisting of Bloch-like oscillations can be identified. The simulation is performed by choosing the corresponding levels of Mg atoms. © 2019 Author(s).

• OSTI ID: 22946885
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Vol. 2075; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

60 APPLIED LIFE SCIENCES
74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
BLOCH EQUATIONS
LASER RADIATION
NONLINEAR PROBLEMS
PERTURBATION THEORY
PROBES