Journal
APPLIED PHYSICS B-LASERS AND OPTICS
Volume 84, Issue 1-2, Pages 131-137Publisher
SPRINGER
DOI: 10.1007/s00340-006-2167-4
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Second harmonic generation and optical parametric amplification in negative-index metamaterials (NIMs) are studied. The opposite directions of the wave vector and the Poynting vector in NIMs results in a backward phase-matching condition, causing significant changes in the Manley-Rowe relations and spatial distributions of the coupled field intensities. It is shown that absorption in NIMs can be compensated by backward optical parametric amplification. The possibility of distributed-feedback parametric oscillation with no cavity has been demonstrated. The feasibility of the generation of entangled pairs of left- and right-handed counter-propagating photons is discussed.
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