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Negative-index metamaterials: second-harmonic generation, Manley–Rowe relations and parametric amplification

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TLDR
In this paper, second harmonic generation and optical parametric amplification in negative-index metamaterials (NIMs) were studied, and the feasibility of the generation of entangled pairs of left and right-handed counter-propagating photons was discussed.
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.

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Journal ArticleDOI

Optical negative-index metamaterials

TL;DR: In this paper, a review describes the recent progress made in creating nanostructured metamaterials with a negative index at optical wavelengths, and discusses some of the devices that could result from these new materials.
Journal ArticleDOI

Fabrication of optical negative-index metamaterials: Recent advances and outlook

TL;DR: The recent developments on large-scale, multiple-functional-layer metamaterials are discussed in detail, and alternative methods for 3D fabrication of complex structures are mentioned.
Journal ArticleDOI

Phase Mismatch–Free Nonlinear Propagation in Optical Zero-Index Materials

TL;DR: It is shown that metamaterials can be designed with optical properties that relax the phase-matching requirements in nonlinear optics, and the experimental demonstration of phase mismatch–free nonlinear generation in a zero-index optical meetamaterial is reported.
Journal ArticleDOI

Experiments on second- and third-harmonic generation from magnetic metamaterials

TL;DR: Experiments on second- and third-harmonic generation from magnetic metamaterials composed of nanoscale gold split-ring resonators and from control samples for excitation with 170-fs pulses centered at 1.5-microm wavelength show the strongest nonlinear signals are found for resonances with magnetic-dipole character.
Journal ArticleDOI

Criterion for Negative Refraction with Low Optical Losses from a Fundamental Principle of Causality

TL;DR: In this paper, the authors derive a rigorous criterion of negative refraction (left handedness) from the fundamental requirement of causality, which imposes the lower limits on the electric and magnetic losses in the region of the negative refractive index.
References
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Journal ArticleDOI

Negative index of refraction in optical metamaterials.

TL;DR: A double-periodic array of pairs of parallel gold nanorods is shown to have a negative refractive index in the optical range, which results from the plasmon resonance in the pairs of nanorod for both the electric and the magnetic components of light.
Journal ArticleDOI

Magnetic Response of Metamaterials at 100 Terahertz

TL;DR: The measured optical spectra of the nanofabricated gold structures come very close to the theoretical expectations and additional numerical simulations show that the structures exhibit a frequency range with negative permeability for a beam configuration in which the magnetic field couples to the LC resonance.
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Experimental Demonstration of Near-Infrared Negative-Index Metamaterials

TL;DR: The first fabrication and experimental verification of a transversely structured metal-dielectric-metal multilayer exhibiting a negative refractive index around 2 microm is reported.
Journal ArticleDOI

Nanofabricated media with negative permeability at visible frequencies

TL;DR: A nanofabricated medium consisting of electromagnetically coupled pairs of gold dots with geometry carefully designed at a 10-nm level exhibits a strong magnetic response at visible-light frequencies, including a band with negative µ.
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