How do lasers work?

17 February 2012
Presented by Sarah Castor-Perry.

From DVD players and supermarket scanners to laser pointers and Bond movies, lasers are part of our lives. But just how do they work? In this Naked Science Scrapbook we find out how excitable atoms produce the laser beams and how those beams are used to perform surgery, send information through the internet and even measure the distance to the moon!

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