Scientists have demonstrated ultrafast UV-C laser pulses that last less than a trillionth of a second and can be reliably detected using ultra-thin semiconductor sensors. The technology was even used to send messages through free space, hinting at powerful new communication systems. Credit: Shutterstock Photonic technologies that operate in the ultraviolet UV-C range (100−280 nm) play an important role in fields ranging from super-resolution microscopy to optical communications. As these