Back to results
US 11,885,992 B1Granted
Nanofabricated volume gratings
AssigneeWavefront Research, Inc.
InventorThomas W. Stone
Life of this patent
Estimating the term…
Abstract
Methods to manufacture volume transmission diffraction grating (quasi-Bragg gratings) and volume transmission diffraction gratings made by those methods.
Claims5
A volume diffraction grating comprising:
- a structure comprising a number of protrusions and a number of cavities;
- the structure comprising substantially a first material;
- the number of protrusions being at least partially filled by at least a second material;
- the volume diffraction grating being a spatially varying grating with a varying combination of the first and second materials;-refractive index modulation for the volume grating tuned by at least one of annealing induced diffusion or alloying;
- said refractive index modulation, after tuning, being such as to provide predetermined diffraction efficiency of said volume diffraction grating.
2 more elements
Dependencies are inferred from the claim text.