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How a Laser Works
4:53
YouTubeengineerguy
How a Laser Works
Bill shows how the three key characteristics of laser light - single wavelength, narrow beam, and high intensity - are made. He explains the operation of a ruby laser - the first laser ever made - showing how electronic transitions create stimulated emission to give coherent light, and then how the ends of the ruby cavity create a narrow ...
3M viewsJun 5, 2012
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