optical maser
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optical maser
n.
A laser, especially one that produces visible radiation.
la•ser
(ˈleɪ zər)n.
a device that produces a nearly parallel, nearly monochromatic, and coherent beam of light by exciting atoms and causing them to radiate their energy in phase.
Compare maser. [1955–60; l(ightwave) a(mplification by) s(timulated) e(mission of) r(adiation)]
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Noun | 1. | ![]() optical device - a device for producing or controlling light photocoagulator - surgical instrument containing a laser for use in photocoagulation |