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Quarter-wave Mirrors

Definition: dielectric mirrors based on a sequence of quarter-wave layers

Alternative term: Bragg mirrors

More general term: dielectric mirrors

Category: photonic devices

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URL: https://www.rp-photonics.com/quarter_wave_mirrors.html

A quarter-wave mirror, also called a Bragg mirror, is a dielectric mirror structure which consists of an alternating sequence of layers of two different optical materials, with each optical layer thickness corresponding to one-quarter of the wavelength for which the mirror is designed (here, the wavelength is taken to be the wavelength within the material, not the vacuum wavelength). For a given wavelength and number of layer pairs, a quarter-wave mirror is the structure which can result in the highest reflectivity.

Quarter-wave stacks are also very basic building blocks of more complicated dielectric mirror structures.

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See also: Bragg mirrors, dielectric mirrors, chirped mirrors, dispersive mirrors
and other articles in the category photonic devices

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