Laser Fusion Research Center

Energy-dependent competing pathways in the plasma processing of fused silica: from topology-selective relaxation to network disordering

Oxygen-plasma processing can attenuate polishing-induced topographic features on fused silica, whereas increasingly energetic bombardment can disorder the near-surface network. Atomic force microscopy, Raman spectroscopy, laser-damage measurements, plasma diagnostics, and molecul...

Diamond-based deep ultraviolet vortex beam generation with suppressed higher-order diffractions

Optical vortices (OVs) with unique singular phase and orbital angular momentum are widely used in various applications including particle manipulation, microscopy, and imaging scenarios. Regardless, the undesired higher-order foci introduced by the conventional vortex lens such a...