New Approach to Generate Lasers

Particles with negative mass in a semiconductor interact with confined light in a microcavity

Light Passing Through a 2D-Waveguide Array

A 2D-experimental system allows to study materials that were theorized to exist only in 4D-space

A Space-Time Sensor for Light-Matter Interactions

Attosecond pulses allow to observe the motions of electrons in atoms

New Transparent Materials Absorb Light

Concept of coherent virtual absorption by temporally shaping the incident waveform

Metalenses With Tunable Features

New devices, made of graphene and a punctured gold surface, could be used for amplitude tunable lenses

Light Pulses Control Neuron Activity

Controlling firing pattern of neurons by manipulating the phase of the spectral components of the light

Concept for a Directional Color Filter

Nanoscale devices divide incident white light into its component colors based on the direction of illumination

Path Length of Light in Opaque Media

A seemingly paradoxical prediction in physics has now been confirmed in an experiment

Looking Inside Refraction of Metamaterials

Properties of metamaterials can be controlled by the lattice constants

Metasurfaces Form Vortex Beams

Any input polarization of light can result in any orbital angular momentum output