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Optical limiting in defective quadratic nonlinear photonic crystals
KTH, Skolan för bioteknologi (BIO), Teoretisk kemi (stängd 20110512).
2006 (engelsk)Inngår i: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 99, nr 12, s. 123107-Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

By using a nonlinear transfer matrix method and an iteration method, we investigated an optical limiting in a defective quadratic nonlinear photonic crystal under strong pump-depletion conditions. Due to a giant enhancement of the second harmonic (SH) generation induced by the strong localization of light near the defective band, the progress of the energy exchange from the forward fundamental frequency (FF) channel to the SH channels (both forward and backward) and the backward FF channel is speeded up. The structure can therefore be used as a high-efficient compact optical power limiter. We have also studied the effects of two important parameters of the defective nonlinear periodic structure, the number of the periods and the nonlinear efficiency of the composite material, on the optical limiting.

sted, utgiver, år, opplag, sider
2006. Vol. 99, nr 12, s. 123107-
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Identifikatorer
URN: urn:nbn:se:kth:diva-37704DOI: 10.1063/1.2206408ISI: 000238730000008Scopus ID: 2-s2.0-33745683351OAI: oai:DiVA.org:kth-37704DiVA, id: diva2:434887
Tilgjengelig fra: 2011-08-16 Laget: 2011-08-16 Sist oppdatert: 2017-12-08bibliografisk kontrollert

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