Efficient nonlinear optical interactions are essential for many applications in modern
photonics. However, they typically require intense laser sources and long interaction …

Abstract Epsilon‐near‐zero (ENZ) photonics is the study of light–matter interactions in the
presence of structures with near‐zero permittivity and has been emerging as an important …

The invisibility cloak, a long-standing fantastic dream for humans, has become more
tangible with the development of metamaterials. Recently, metasurface-based invisibility …

Metamaterials with a Dirac-like cone dispersion at the center of the Brillouin zone behave
like an isotropic and impedance-matched zero refractive index material at the Dirac-point …

With its unique and exclusive linear and nonlinear optical characteristics, epsilon-near-zero
(ENZ) photonics has drawn a tremendous amount of attention in the recent decade in the …

Light travels in a zero-index medium without accumulating a spatial phase, resulting in
perfect spatial coherence. Such coherence brings several potential applications, including …

We show that standard approximations in nonlinear optics are violated for situations
involving a small value of the linear refractive index. Consequently, the conventional …

Metamaterials with a refractive index of zero exhibit properties that are important for
integrated optics. Possessing an infinite effective wavelength and zero spatial phase …

Accidental degeneracy plays an important role in the generation of novel band dispersions.
Photonic structures that exhibit an accidental Dirac-like conical dispersion at the center of …

Near‐zero‐index platforms arise as a new opportunity for light manipulation with boosting of
optical nonlinearities, transmission properties in waveguides, and constant phase …