Definition of grating

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PowerPhotonic Ltd. - Bessel Beam Generator LB 6/24

Photonics Dictionary

grating: A framework or latticework having an even arrangement of rods, or any other long narrow objects with interstices between them, used to disperse light or other radiation by interference between wave trains from the interstices. The ability of a grating to separate wavelengths (chromatic resolving power) is expressed as being equal to the number of lines in the grating.

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