The Basics of Lasers

We discuss the basics of lasers. What are the physics of lasers? What is a gain medium? What does collimated mean and how does it apply to lasers? How do lasers work for barcodes and DVD players? What is the cat distraction application of lasers and is it relevant to way the military uses lasers? Can lasers be used to create light sabers or a death star? What is a femtosecond? Should you fire lasers at people's eyes? Come learn about lasers with us.