Tunable nonlinear parity-time-symmetric defect modes with an atomic cell

We propose a scheme of creating a tunable highly nonlinear defect in a one-dimensional photonic crystal. The defect consists of an atomic cell filled in with two isotopes of three-level atoms. The probe-field refractive index of the defect can be made parity-time (PT) symmetric, which is achieved by...

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Bibliographic Details
Published inOptics letters Vol. 38; no. 20; p. 4033
Main Authors Hang, Chao, Zezyulin, Dmitry A, Konotop, Vladimir V, Huang, Guoxiang
Format Journal Article
LanguageEnglish
Published United States 15.10.2013
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Summary:We propose a scheme of creating a tunable highly nonlinear defect in a one-dimensional photonic crystal. The defect consists of an atomic cell filled in with two isotopes of three-level atoms. The probe-field refractive index of the defect can be made parity-time (PT) symmetric, which is achieved by proper combination of a control field and of Stark shifts induced by a far-off-resonance field. In the PT-symmetric system, families of stable nonlinear defect modes can be formed by the probe field.
ISSN:1539-4794
DOI:10.1364/OL.38.004033