Optical diffraction component for suppressing at least one target wavelength by destructive interference

A component, comprising:

• a periodic grating structure profile comprising diffraction structures configured so that a wavelength range around a first wavelength, λ1, is diffracted by the periodic grating structure profile,
• wherein:
• the first wavelength, λ1, is in the infrared wavelength range;
• the wavelength range comprises radiation components comprising at least three different phases which interfere with each other destructively in at least one order of diffraction;
• the at least one order of diffraction is selected from the group consisting of:
• the zero order of diffraction of the first wavelength, λ1;
• the +first order of diffraction of the first wavelength, λ1;
• and the −first order of diffraction of the first wavelength, λ1;
• the diffraction structures comprise diffraction structure levels;
• the diffraction structure levels comprise:
• a neutral diffraction structure level corresponding to a reference height of zero;
• a positive diffraction structure level arranged higher by an optical path length of λ1/4+1/−20% relative to the neutral diffraction structure level;
• and
• a negative diffraction structure level arranged lower by an optical path length of λ1/4+1/−20% relative to the neutral diffraction structure level;
• and
• the diffraction structure levels define a topography of a grating period of a grating structure profile that is repeated regularly along a direction.