Numerous advances have been made in X-ray technology in recent years. X-ray imaging
plays an important role in the nondestructive exploration of the internal structures of objects …

Diffractive lenses fabricated by lithographic methods are one of the most popular image
forming optics in the x-ray regime. Most commonly, binary diffractive optics, such as Fresnel …

We extend the concept of fractal spiral zone plates and define a new family of Cantor
sequence spiral zone plates (CSSZPs) by removing the interference of high-order …

Generalized composite aperiodic zone plates (GCAZPs) are proposed to generate clearer
images at focal planes. The images can be produced by a target object at infinity based on a …

Photon sieves are a fairly new class of diffractive lenses that open unprecedented
possibilities for high resolution imaging and spectroscopy, especially at short wavelengths …

Misalignment measurement is a fundamental but challenging issue in optical lithography.
Unfortunately, even with research efforts spanning a few decades, sub-nanoscale …

We propose two-dimensional gratings comprised of a large number of identical and similarly
oriented hexagonal holes for the high order diffraction suppression. An analytical study of …

A modified Fibonacci Pearcey zone plate (MFiPZP) is designed to produce two foci with long
focal depths and the golden mean. Compared with the conventional circular Pearcey beam …

Our group proposes an improved misalignment measurement scheme using the moiré beat
signal. Compared with the coarse-fine moiré-based alignment methods, this scheme could …

Optical vortices generated by the conventional vortex lens are usually disturbed by the
undesired higher-order foci, which may lead to additional artifacts and thus degrade the …