The United States’ Defense Advanced Research Projects Agency (DARPA) recently achieved a new record in transmitting energy over distance. In tests performed in New Mexico, the Persistent Optical ...

Researchers at the University of Illinois have pulled off a laser first: they built a new kind of eye-safe laser that works ...

The King of Random builds a blowgun with laser precision at home.

After drones and missiles, laser technology is the future of combat. The use of laser weapons has already begun.

Researchers have discovered a simple yet powerful way to protect atoms from losing information—a key challenge in developing ...

Low current density sheet beam electron gun is very useful for compact planar travelling wave tube (TWT). In this paper, a planner low current density elliptical sheet beam electron gun is presented, ...