The Wikipedia page "Supercontinuum" describes a laser that produces white light in a glass fiber. The page includes the history of work on this kind of laser and a technical description of its operation. A striking photo shows the laser light changing color as it passes through a coil with many turns of fiber.
%0 Electronic Source %D April 30, 2012 %T Wikipedia: Supercontinuum %I Wikipedia %V 2016 %N 27 October 2016 %8 April 30, 2012 %9 text/html %U https://en.wikipedia.org/wiki/Supercontinuum
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