期刊
OPTICS LETTERS
卷 38, 期 20, 页码 4033-4036出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.38.004033
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资金
- NSF-China [11174080, 11105052]
- Program of Introducing Talents of Discipline to Universities [B12024]
- FCT (Portugal) [PTDC/FIS-OPT/1918/2012, PEst-OE/FIS/UI0618/2011]
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. (C) 2013 Optical Society of America
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