Self-probed ptychography from semiconductor high-harmonic generation

Abstract

We demonstrate a method to image an object using a self-probing approach based on semiconductor high-harmonic generation. On one hand, ptychography enables high-resolution imaging from the coherent light diffracted by an object. On the other hand, high-harmonic generation from crystals is emerging as a new source of extreme-ultraviolet ultrafast coherent light. We combine these two techniques by performing ptychography measurements with nano-patterned crystals serving as the object as well as the generation medium of the harmonics. We demonstrate that this strong field in situ approach can provide structural information about the object. With the future developments of crystal high harmonics as a compact short-wavelength light source, our demonstration can be an innovative approach for nanoscale imaging of photonic and electronic devices in research and industry.

References in corpus (9)

• High-harmonic generation in amorphous solids
• Topological strong field physics on sub-laser cycle time scale
• PyNX: high performance computing toolkit for coherent X-ray imaging based on operators
• High-Harmonic generation from spin-polarised defects in solids
• Perspective on petahertz electronics and attosecond nanoscopy
• Potential of attosecond coherent diffractive imaging
• Influence of vacancy defects in solid high-order harmonic generation
• Orbital angular momentum from semiconductor high-order harmonics
• Enhanced high-harmonic generation from chromium-doped magnesium oxide