An optical device for dividing a beam into two or more separate beams.A simple beamsplitter may be a very thin sheet of glass inserted in th..
A dielectric coating consisting of alternating layers of quarter-wave film of a higher refractive index and lower refractive index than the ..
A thin layer of material applied to a surface to reduce the amount of reflected energy.Ideally the index of refraction of that material shou..
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