11 Jan '14, 12am

Lazing With A Ruby

Lazing With A Ruby

While the design and manufacture of the first ruby laser was astonishingly complex, the basic idea behind it is pretty simple. [Ben]‘s laser uses a synthetic ruby rhod with the ends ground optically flat. This rod is placed inside a flash tube. When the flash tube lights up, the rod absorbs the light and re-emits it as a coherent beam for several milliseconds. This beam bounces between two mirrors – one fully reflective and another partially reflective – and emits a constant stream of coherent photons. It’s tremendously more complex than simply connecting a laser diode to a power source, but replicating a build that graced the covers of Time and Newsweek only fifty years ago is pretty impressive

Full article: http://hackaday.com/2014/01/10/lazing-with-a-ruby/

Tweets

Sam Ruby: Software in 2014:

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