A chirp-pulse laser (laser with colors organized in time) striking a diffractive lens (a lens that distributes colors along its axis) generates a flying focus, which is captured by an ultrafast movie.

For the first time, researchers have found a way to use a concept called 'flying focus' to better control the intensity of lasers over longer distances. Their technique includes capturing some of the ...

Optical scientists at The University of Arizona have developed new switchable, flat, liquid crystal diffractive lenses that can adaptively change their focusing power. That's great news for those old ...

When you were a kid, you might have used a magnifying glass to focus the sun's light onto a spot on the sidewalk. The lens of the magnifying glass allowed you to concentrate the sun's energy by ...