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Opt Lett. 2007 Jul 15;32(14):1992-4.

Efficient parametric amplification of narrow beams in photonic crystals.

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  • 1Institució Catalana de Reserca i Estudis Avançats and Department de Fisica i Enginyeria Nuclear,Universitat Politècnica de Catalunya, Colom 11, E-08222 Terrassa, Barcelona, Spain.


We theoretically predict and numerically demonstrate that narrow beams (of the width of few wavelengths) can be efficiently parametrically amplified in nonlinear photonic crystal (with chi((2)) nonlinearity) tuned to sub-diffractive (self-collimating) regimes. We derive relations and give analytic estimations for the efficiency of amplification.

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