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OPTICS EXPRESS
Volume 14, Issue 11, Pages 4746-4756Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.14.004746
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We study pulsed second harmonic generation in metamaterials under conditions of significant absorption. Tuning the pump in the negative index range, a second harmonic signal is generated in the positive index region, such that the respective indices of refraction have the same magnitudes but opposite signs. This insures that a forward-propagating pump is exactly phase matched to the backward-propagating second harmonic signal. Using peak intensities of similar to 500 MW/cm(2), assuming chi((2))similar to 80pm/ V, we predict conversion efficiencies of 12% and 0.2% for attenuation lengths of 50 and 5 mu m, respectively. (c) 2006 Optical Society of America.
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