This Colloquium presents an overview of the research on nonlinear electromagnetic
metamaterials. The developed theoretical approaches and experimental designs are …

Metamaterial research is an extremely important global activity that promises to change our
lives in many different ways. These include making objects invisible and the dramatic impact …

Ever since the first experimental demonstration was reported in 2000, the interest in
metamaterials and left-handed media that exhibit a negative refractive index has increased …

We study experimentally the dynamic tunability and self-induced nonlinearity of split-ring
resonators incorporating variable capacitance diodes. We demonstrate that the …

Optical parametric amplification controlled by the auxiliary electromagnetic field enables
transparency, amplification, and oscillation with no cavity in strongly absorbing negative …

The essence of the metamaterial concept from the structural point of view. Particular
attention is paid to the macroscopic description of metamaterials and to the corresponding …

We study the second-harmonic generation (SHG) in left-handed metamaterials with a
quadratic nonlinear response. We demonstrate a novel type of the exact phase matching …

Second harmonic generation and optical parametric amplification in negative-index
metamaterials (NIMs) are studied. The opposite directions of the wave vector and the …

Metamaterials, exhibiting simultaneously negative permittivity ε and permeability μ, more
commonly referred to as left-handed metamaterials (LHMs) and also known as negative …

We analyze the effect of microscopic disorder on the macroscopic properties of composite
metamaterials and study how weak statistically independent fluctuations of the parameters …