Chinese scientists have created a laser that can write directly in the air.

Scientists at the Hongtuo Ultrafast Laser Laboratory in Wuhan have created a laser pen that can draw patterns in the air. It uses ultrashort laser pulses to strip electrons from air particles and turn them into light-emitting plasma or ionized gas. The image obtained with the help of such a laser is visible from all sides. The creators of the laser say that it can be used in high-precision manufacturing, medicine and quantum computing.