Back to results
US 2019/0162592 A1Published application
Super-dispersive off-axis meta-lenses for high resolution compact spectroscopy
AssigneePresident and Fellows of Harvard College
InventorsMohammadreza KHORASANINEJAD, Federico CAPASSO, Wei Ting CHEN, Jaewon OH
Life of this patent
Estimating the term…
Abstract
A meta-lens having a phase profile includes a substrate and a plurality of nanostructures disposed on the substrate. The nanostructures together define the phase profile of the meta-lens. The phase profile achieves an off-axis focus. Each nanostructure is designed according to at least one design parameter of the nanostructure that imparts a phase shift of light passing through the nanostructure.
Claims20
A meta-lens having a phase profile, comprising:
- a substrate;
- and
- a plurality of nanostructures disposed on the substrate, the nanostructures together defining the phase profile of the meta-lens, the phase profile achieving an off-axis focus, each nanostructure having at least one design parameter of the nanostructure that imparts a phase shift of light passing through the nanostructure.
A spectrometer, comprising:
- an off-axis meta-lens configured to receive light including a plurality of light components of different wavelengths, and to refocus and disperse the light components onto a plurality of off-axis focal points associated with the different wavelengths, the off-axis meta-lens including:
- a substrate, and
- a plurality of nanostructures disposed on the substrate, the nanostructures together defining the phase profile of the off-axis meta-lens, the phase profile achieving an off-axis focus, each nanostructure having at least one design parameter of the nanostructure that imparts a phase shift of light passing through the nanostructure;
- and
- an imaging device configured to record the refocused light components at the off-axis focal points respectively.
2 more elements
A planar dispersive device, comprising:
- a substrate;
- and
- a plurality of off-axis meta-lenses arranged in a planar configuration, each off-axis meta-lens configured to refocus and disperse light of a different designed wavelength range;
- wherein each off-axis meta-lens includes:
- a plurality of nanostructures disposed on the substrate, each nanostructure having at least one design parameter of the nanostructure that imparts a phase shift of light passing through the nanostructure, the phase shifts of the nanostructures together defining a phase profile of the off-axis meta-lens, the phase profile achieving refocus and dispersion of light of a corresponding designed wavelength range into a plurality of light components that focuses at a plurality of designed off-axis focal points;
- and
- wherein the designed off-axis focal points of the plurality of off-axis meta-lenses locate at a common plane.
4 more elements
Dependencies are inferred from the claim text.