Here is a homemade LASER gun which works great just like a sci-fi movie. And if you are one of the Star Wars lover then you would love to have one of this.

Homemade Pulse LASER Gun

This laser gun holds a Q-switched Nd:YAG laser head. After charging the capacitors which takes about 4 seconds, it fires an intense 1 MW blast of invisible infrared 1064nm light! The pulse-duration of the light coming out from this laser gun is somewhere around 100ns...

Homemade Pulse LASER Gun (Video)