KyeoReh Lee

Abstract Three-dimensional quantitative phase imaging has been extensively studied in X-ray microtomography to improve the sensitivity and specificity of measurements, especially for low atomic number materials. However, obtaining quantitative phase images typically requires additional measurements or assumptions, which significantly limit the practical applicability.

Editor’s summary High-power fiber lasers are used in a range of scientific fields in addition to their standard use for technology. However, increases in laser output power are limited by nonlinear effects that can damage the optical components and reduce the beam quality. Rothe et al. used a spatial wavefront-shaping technique for multimode fiber lasers that mitigates the detrimental processes, thus enabling output power to be increased appreciably while maintaining beam quality. —Ian S.

Abstract Owing to its unique penetrating power and high-resolution capability, X-ray imaging has been an irreplaceable tool since its discovery. Despite the significance, the resolution of X-ray imaging has largely been limited by the technical difficulties on X-ray lens making. Various lensless imaging methods have been proposed, but are yet relying on multiple measurements or additional constraints on measurements or samples.