The present invention is related to Tunable Diffraction Grating (TDG) optical chips providing reduced or eliminated light scattering artifacts.
The present invention is related to Tunable Diffraction Grating (TDG) optical chips providing reduced or eliminated light scattering artifacts.
A diffraction image of a zeroth diffraction order and higher order diffraction from a diffraction structure in the substrate is provided.
The diffractive element comprises a modulated diffractive structure.
The diffraction model is transformed with a diffraction Radon operator to obtain diffraction data.
A first layer (4) of the diffractionstructure provides a diffraction image having only a zeroth diffraction order.
Among the diffracted rays with a plurality of diffraction orders that arise from the diffractive optical elements, the focal positions of diffracted rays with any adjacent diffraction orders are separated by at least 0.5D (m-1).
The diffracted light is diffracted in a diffraction angle.
As the first diffraction grating and the second diffraction grating, diffraction gratings having two-dimensional period are used.
The diffraction optical element (10) is provided with a diffractive surface (13).
The diffracting unit (20, 38) has a variable diffracting structure (22).
The measured diffraction signal is compared to the first simulated diffraction signal.
Each SBG device has a diffracting state and a non diffracting state.
The reflective diffraction grating (14) comprises a plurality of diffraction structures (144) and a grating contour curved surface (142).
The grating structure is preferably defined by the surface of the grating substrate.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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