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Вид документа : Статья из журнала Шифр издания :
Автор(ы) : Arkhipkin V. G., Myslivets S. A.
Заглавие : All-optical switching in a photonic crystal with a defect containing an N-type four-level atomic system
Место публикации : Phys. Rev. A: American Physical Society, 2012. - Vol. 86, Is. 6. - Ст.063816. - ISSN 1050-2947, DOI 10.1103/PhysRevA.86.063816 Примечания : Cited References: 33. - This work was supported in part by the RAS Grants No. 24.29, No. 24.31, and No. 3.9.5, and SB RAS Grants No. 43 and No. 101.
Предметные рубрики: Electromagnetically-induced-transparency Quantum interference Microcavities All-optical switching Atomic medium Cross-phase modulations Defect mode Electromagnetically induced transparency Four-level atomic system Kerr nonlinearity Laser fields Linear susceptibility One dimensional photonic crystal Probe field Quantum interference Resonance frequencies Third-order susceptibility Transmission spectrums Two photon Аннотация: We study the transmission spectra of a one-dimensional photonic crystal with a defect containing a four-level atomic medium that exhibits a greatly enhanced third-order susceptibility while having a vanishing linear susceptibility dependent on the electromagnetically induced transparency. Two ways of controlling the transmission of a photonic crystal are discussed: via absorption, i.e., nonlinear (two-photon) absorption of the probe field enhanced by constructive quantum interference, and via dispersion, which comes down to shifting the resonance frequency of the defect mode for the probe field by varying the refractive index based on the giant Kerr nonlinearity (cross-phase modulation). We demonstrate that such systems enable nonlinear all-optical switching at ultralow intensities of the coupling and switching laser fields.
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