image: Experimental double-slit diffraction pattern showing full spatial coherence of an isolated harmonic at 13 nm. The vertical spatial modulations are due to the very narrow linewidth that generates observable interferences. This material relates to a paper that appeared in the Dec. 4, 2015, issue of Science, published by AAAS. The paper, by D. Popmintchev at Joint Institute for Lab Astrophysics (JILA) in Boulder, CO, and colleagues was titled, 'Ultraviolet surprise: Efficient soft x-ray high-harmonic generation in multiply ionized plasmas.' view more
Credit: Tenio Popmintchev and Dimitar Popmintchev