A new theoretical study suggests that gravitational waves may leave subtle signatures not in giant detectors, but in the light emitted by atoms.

Optical frequency combs—laser sources that emit evenly spaced colors of light—are foundational, ubiquitous tools for precision measurement, found in optical clocks, gas-sensing spectrometers, and ...

An international team led by researchers at Penn State and Université Paris-Saclay has gained precise control over light emitted from nanoscale sources embedded in two-dimensional (2D) materials. This ...

A tiny metasurface chip can turn invisible infrared light into steerable visible beams, opening the door to powerful new ...

Engineers are turning what used to be a bulky optics bench into something that fits on the tip of a finger, and the latest photonic chips go a step further by splitting a single laser into a ...