Optical diffraction component
Abstract:
An optical diffraction component has a periodic grating structure profile. The diffraction structure levels are arranged so that a wavelength range around two different target wavelengths diffracted by the grating structure profile has radiation components with three different phases that interfere destructively with one another. Diffraction structure levels predefine a topography of a grating period of the grating structure profile that is repeated regularly along a period running direction. These include a neutral diffraction structure level, a positive diffraction structure level raised relative thereto, and a negative diffraction structure level lowered relative thereto. The neutral diffraction structure level has an extent along the period running direction which is less than 50% of the extent of the grating period. A difference between the two target wavelengths is less than 50%. The result is an optical diffraction component whose possibilities for use can be extended, for example, to stray light suppression.
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