Metalens structures for the modulation of incident light
OwnerWeidong ZHOUinventor
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Abstract
A metalens and methods of manipulating light using a metalens are provided. In some aspects, a metalens comprises a slab or substrate and a plurality of regions or features distributed on the slab. In some instances, the slab can be formed from a material having a first refractive index, and the plurality of regions can be formed from a material having a second refractive index. In some instances, the first refractive index can be higher than the second refractive index, and in some aspects, the plurality of regions define an optical modulation or manipulation structure for light having a target wavelength λ or the target range of wavelengths Δλ.
Claims20
A metalens comprising:
- a slab;
- and
- a plurality of regions distributed on the slab,
- wherein the slab is formed from a material having a first refractive index,
- wherein the plurality of regions is formed from a material having a second refractive index,
- wherein the first refractive index is higher than the second refractive index, and
- wherein the plurality of regions define an optical modulation structure for light having a target wavelength λ or a target range of wavelengths Δλ.
A method of modulating light, the method comprising:
- receiving, at a metalens, light from a light source, the light comprising a target wavelength λ or the target range of wavelengths Δλ, wherein the metalens comprises:
- a slab formed from a material having a first refractive index;
- and
- a plurality of regions formed from a material having a second refractive index distributed on the slab,
- wherein the first refractive index is higher than the second refractive index, and
- wherein the plurality of regions define an optical modulation structure for light having the target wavelength λ or the target range of wavelengths Δλ;
- and
- modulating light at the target wavelength λ or the target range of wavelengths Δλ.
Dependencies are inferred from the claim text.