Arrayed and checkerboard optical waveguides controlled by the electromagnetically-induced transparency

Details Arrayed and checkerboard optical waveguides controlled by the electromagnetically-induced transparency Arrayed and checkerboard optical waveguides controlled by the electromagnetically-induced transparency

2010-11-17

arxiv.org/abs/1011.3871v1

Physics

Optics

9 pages, 4 figures, Physical Review A, in press

Scientific paper

We introduce two models of quasi-discrete optical systems: an array of waveguides doped by four-level N-type atoms, and a nonlinear checkerboard pattern, formed by doping with three-level atoms of the {\Lambda}-type. The dopant atoms are driven by external fields, to induce the effect of the electromagnetically-induced transparency (EIT). These active systems offer advantages and addition degrees of freedom, in comparison with ordinary passive waveguiding systems. In the array of active waveguides, the driving field may adjust linear and nonlinear propagation regimes for a probe signal. The nonlinear checkerboard system supports the transmission of stable spatial solitons and their "fuzzy" counterparts, straight or oblique.

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