Every once in a while, you may look up toward the sun and see strange bright lights on either side of it. Or perhaps you'll be sitting in an aircraft, looking out the window at its shadow, and see a ...

Nanyang Technological University, Singapore (NTU Singapore) scientists have used a classic optical phenomenon known as the Poisson spot to create stable patterns of light called optical skyrmions, ...

Metasurfaces are ultra-thin assemblies of subwavelength structures engineered to manipulate light at the nanoscale. When designed from materials with strong optical nonlinearity, these planar ...

Nonlinear optical waveguide systems exploit the tight confinement of light in submicrometre structures to enhance light–matter interactions far beyond those achievable in bulk media. Central phenomena ...