Negative-index metamaterials: second-harmonic generation, Manley–Rowe relations and parametric amplification |
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| Authors: | AK Popov VM Shalaev |
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| Institution: | (1) Department of Physics and Astronomy and Department of Chemistry, University of Wisconsin-Stevens Point, Stevens Point, WI 54481-3897, USA;(2) School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907-2035, USA |
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| Abstract: | 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.
PACS 78.67.-n; 42.65.Ky; 42.65.Lm |
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