The problem of phase retrieval, ie, the recovery of a function given the magnitude of its
Fourier transform, arises in various fields of science and engineering, including electron …

The frequency doubling of laser light was one of the first new phenomena observed
following the invention of the laser over 50 years ago. Since then, the quest to extend …

Extending planar two-dimensional structures into the three-dimensional space has become
a general trend in multiple disciplines, including electronics, photonics, plasmonics and …

We generate angularly isolated beams of circularly polarized extreme ultraviolet light
through the first implementation of non-collinear high harmonic generation with circularly …

We demonstrate fully phase-matched high harmonic emission spanning the water window
spectral region important for nano-and bioimaging and a breadth of materials and molecular …

In the field of beam physics, two frontier topics have taken center stage due to their potential
to enable new approaches to discovery in a wide swath of science. These areas are …

Fully coherent, soft X-ray attosecond pulses are now available through high-order harmonic
generation (HHG); however, the output energy is insufficient for various applications, such …

Microscopy has greatly advanced our understanding of biology. Although significant
progress has recently been made in optical microscopy to break the diffraction-limit barrier …

Coherent diffraction imaging (CDI) is high-resolution lensless microscopy that has been
applied to image a wide range of specimens using synchrotron radiation, X-ray free-electron …

For centuries, lens-based microscopy, such as optical, phase-contrast, fluorescence,
confocal, and electron microscopy, has played an important role in the evolution of modern …