Multilevel diffractive lenses (MDLs) has undergone considerable advancements, marked by
their exceptional efficiency and diverse focusing capabilities, resulting in their widespread …

A coronagraph designed for high contrast imaging applications has been experimentally
tested using coherent laser light and a vortex mask of topological charge m= 2. Intensity …

We introduce actively tunable diffractive optical elements fabricated from shape-memory
polymers (SMPs). By utilizing the shape-memory effect of the polymer, at least one crucial …

Photonic crystals and nanophotonics have received a great deal of attention over the last
decade, largely due to improved numerical modeling and advances in fabrication …

Ultra-thin optical components with high design flexibility are required for various applications
in today's optical and imaging systems, and this is why the use of diffractive optical elements …

With the widespread application of micro-optics in a large range of areas, versatile high
quality fabrication methods for diffractive optical elements (DOEs) have always been desired …

We introduce a new optical vortex coronagraph (OVC) method to determine the angular
distance between two sources when the separation is sub-Rayleigh. We have found a direct …

In an embodiment, a method forms a lens with wavefront coding. The method includes
positioning a lens in a mold; and curing material onto a surface of the lens to forman …

We demonstrate the generation of a nondiffracting double helical beam using axicons
and±1 vortex phase plates in a common-path interferometric system. Using linear diffraction …

Low height imaging systems may include one or more optical channels and a detector array.
Each of the optical channels may be associated with one or more detectors of the array …