Article ID Journal Published Year Pages File Type
1534788 Optics Communications 2014 5 Pages PDF
Abstract

We propose a scheme for a broadband optical cavity induced by interacting dark resonances in a ΛΛ-type four-level atomic system. The interacting dark resonances leads to constructive interference for the nonlinear dispersion and destructive interference for the absorption between two electromagnetically induced transparency windows. The enhanced nonlinear anomalous dispersion is used to broaden the cavity linewidth. The simulation results show that the cavity linewidth could be widened more than one order of magnitude broader than an empty-cavity linewidth. Moreover, the cavity linewidth depends on the intensities and the detunings of coupling fields.

Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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