Photon-Efficient Lensless XUV Imaging Using Ghost Imaging on a Tabletop Platform

High-resolution extreme ultraviolet (XUV) imaging traditionally depends on complex optics and high photon flux, limiting accessibility and risking radiation damage to sensitive samples. Conventional methods also require large-scale facilities and stable, coherent beams. Here we present a lensless XUV microscopy platform integrating a compact tabletop high-harmonic generation source with correlation-based ghost imaging, eliminating the need for imaging optics and enhancing tolerance to mechanical and beam instabilities. By applying optimized preprocessing techniques, we demonstrate reliable image reconstruction of microscopic features under photon-limited conditions using a limited number of illumination patterns. This approach reduces system complexity and radiation dose, offering a promising route for accessible, low-dose, high-resolution XUV imaging in laboratory environments.