Abstract: Embodiments of 3D imaging systems that use a multifunctional, nano structured metalens to replace the conventional microlens array in light field imaging are disclosed. The optical focusing properties of the metalenses provided by gradient metasurface optical elements. The gradient metasurfaces allow the properties of the elements of the metalens array to be changed by tuning the gradient metasurfaces.

Abstract: A multifunctional dielectric gradient metasurface optical device has a layer of nanoscale dielectric gradient metasurface optical antenna elements deposited on a substrate layer, arranged with spatially varying orientations, shapes, or sizes in the plane of the device such that the optical device has a spatially varying optical phase response capable of optical wavefront shaping. The spatially varying optical phase response is a spatial interleaving of multiple distinct phase profiles corresponding to multiple optical sub-elements, thereby providing multifunctional wavefront shaping in the single optical element.

Abstract: An optical device including a shaped electrode on a substrate thereof utilizes total internal reflection to provide improved transmission of electromagnetic radiation (‘light’) to the substrate compared to standard electrode designs that involve flat electrode surfaces. Redirection of incident light by a tilted or otherwise shaped contact or material added on the contact provides otherwise reflected light to an open surface region of the substrate. Optional plasmon mediated focusing of incident p-polarized light may be realized.

Abstract: A multifunctional dielectric gradient metasurface optical device has a layer of nanoscale dielectric gradient metasurface optical antenna elements deposited on a substrate layer, arranged with spatially varying orientations, shapes, or sizes in the plane of the device such that the optical device has a spatially varying optical phase response capable of optical wavefront shaping. The spatially varying optical phase response is a spatial interleaving of multiple distinct phase profiles corresponding to multiple optical sub-elements, thereby providing multifunctional wavefront shaping in the single optical element.

Abstract: Embodiments of 3D imaging systems that use a multifunctional, nano structured metalens to replace the conventional microlens array in light field imaging are disclosed. The optical focusing properties of the metalenses provided by gradient metasurface optical elements. The gradient metasurfaces allow the properties of the elements of the metalens array to be changed by tuning the gradient metasurfaces.

Abstract: An optical device including a shaped electrode on a substrate thereof utilizes total internal reflection to provide improved transmission of electromagnetic radiation (‘light’) to the substrate compared to standard electrode designs that involve flat electrode surfaces. Redirection of incident light by a tilted or otherwise shaped contact or material added on the contact provides otherwise reflected light to an open surface region of the substrate. Optional plasmon mediated focusing of incident p-polarized light may be realized.

Abstract: A shaped electrode on a light transmitting substrate utilizes total internal reflection to provide improved transmission of electromagnetic radiation (‘light’) compared to standard electrode designs that involve flat electrode surfaces. Redirection of incident light by a tilted or otherwise shaped contact or material added on the contact provides otherwise reflected light to an open surface region. Optional plasmon mediated focusing of incident p-polarized light may be realized.

Abstract: A memory device. The memory device includes a substrate and an array of nanocrystals formed proximate to the substrate. The array of nanocrystals is electrically insulated to hold charge carriers therein. A presence of charge carriers within the array of nanocrystals represents a first logic state of the memory device. An absence of the charge carriers within the array of nanocrystals represents a second logic state of the memory device. The presence and the absence of the charge carriers is determinable via directing a beam of photons onto the array of nanocrystals and sensing an optical response.

Abstract: A method and apparatus for modulating light with an array of nanocrystals. First photons are directed onto an array of nanocrystals and at least a portion of the first photons ate directed by the array of nanocrystals. In one embodiment, the array of nanocrystals emit second photons. A wavelength of the second photons is modulated responsive to a signal. In one embodiment, dopants are formed proximate to the array of nanocrystals and energy from the absorbed portion of the first photons is coupled to the dopants to cause the to emit third photons. An intensity of the third photons is modulated responsive to a signal.

Abstract: A memory device. The memory device includes a substrate and an array of nanocrystals formed proximate to the substrate. The array of nanocrystals is electrically insulated to hold charge carriers therein. A presence of charge carriers within the array of nanocrystals represents a first logic state of the memory device. An absence of the charge carriers within the array of nanocrystals represents a second logic state of the memory device. The presence and the absence of the charge carriers is determinable via directing a beam of photons onto the array of nanocrystals and sensing an optical response.

Abstract: A method and apparatus for replicating patterns with a resolution well below the diffraction limit, uses broad beam illumination and standard photoresist. In particular, visible exposure (&lgr;=410 nm) of silver nanoparticles in close proximity to a thin film of g-line resist (AZ 1813) can produce selectively exposed areas with a diameter smaller than &lgr;/20. The technique relies on the local field enhancement around metal nanostructures when illuminated at the surface plasmon resonance frequency. The method is extended to various metals, photosensitive layers, and particle shapes.