How a Laser Works

by 1389 on May 20, 2013

in 1389 (blog admin), innovations, tech industry

On YouTube:

Published on Jun 5, 2012 by engineerguyvideo

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 wavelength highly collimated beam. You can learn more about laser in the EngineerGuy team’s new book Eight Amazing Engineering Stories

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