Using a technique called "compressed ultrafast photography" (CUP), researchers at Washington University in St. Louis can track light as it travels and interacts with objects. It's a new spin on the streak camera method, where a sensor moves along with the light to record its motion. Previous streak camera setups have been limited to narrow, one-dimensional views, but the CUP technique allows for two-dimensional image capture. One example video shows a laser pulse sauntering by and reflecting off a mirror in a few tens of picoseconds (trillionths of a second).



So far, researchers have used the technique to explore a handful of phenomena, including how light reflects and refracts, as well as how photons behave when transitioning from one medium to another (e.g., from air to a resin). Nature reports the CUP technique could be used in the development of so-called invisibility cloaks that work by bending light around an object. So while it may not be the absolute fastest high-speed camera system currently out there, perhaps someday it'll help us get a bit closer to realizing those Star Trek/Harry Potter dreams.

(Image credit: Nature)