Joachim Stöhr to deliver the 2010 Robert Hofstadter Memorial Lectures April 12-13

Joachim Stöhr

Joachim Stöhr, director of SLAC's Linac Coherent Light Source

Joachim Stöhr, director of the Linac Coherent Light Source (LCLS) at the SLAC National Accelerator Laboratory, will deliver the Department of Physics' 2010 Robert Hofstadter Memorial Lectures on April 12 and 13. 

The lectures were established in memory of Nobel Prize-winning physicist Robert Hofstadter, who served on the physics faculty from 1950 until his death in 1990. Both talks are free and open to the public.

Stöhr joined Stanford and SLAC in January 2000 as a professor of photon science after spending nearly 15 years at the IBM Almaden Research Center. He was the director of the Stanford Synchrotron Radiation Lightsource at SLAC before becoming director of LCLS, which is the world's first X-ray laser.

The mile-long machine, which debuted last spring, produces a laser beam made of X-rays instead of visible light. Its laser bursts are so bright and so brief that researchers can use them as an ultrafast stop-motion camera to capture the minute details of things previously unseen, such as the arrangement of atoms in metals, semiconductors, ceramics, polymers and proteins.

Stöhr's first talk, "The Light Fantastic: Birth of the X-Ray Laser and a New Era of Science," is scheduled for 8 p.m. Monday, April 12, in Room 105 of Building 320 (Geology Corner). His talk will trace the 20-year history of the creation of LCLS and describe how the facility is now being used by scientists worldwide.

His second talk, "Birth of the X-Ray Laser: Movies of the Dynamic Worlds of Atoms and Electrons," will describe the evolution of modern X-ray sources, culminating in the creation of LCLS. It is scheduled for 4:15 p.m. Tuesday, April 13, in the Hewlett Teaching Center, Room 201.