Published February 27, 2013 at 500 × 750 in A Dual Look at Photosystem II Using the World’s Most Powerful X-Ray Laser The two mile long Linac Coherent Light Source (LCLS) at the SLAC National Accelerator Laboratory operated by Stanford University is the world’s most powerful X-ray laser. (Image courtesy of SLAC) (Visited 24 times, 1 visits today)