Our mission is to commercialize laser fusion — the ultimate energy source for the 21st century and beyond.
We are transforming decades of scientific progress into commercial fusion plants to deliver safe, affordable, and effectively limitless energy.
Our leadership team
Alexander Valys
President, Founder
Brent Gill
Chief Operating Officer
Giovanni Greco
SVP, Engineering
Susana Reyes, Ph.D.
VP, Chamber and Plant Design Systems
Gary Sobolevskiy
General Counsel
Alison Christopherson, Ph.D.
Head of Target Design
Silvia De Dea, Ph.D.
Head of Materials and Process Engineering
Brian Boggs
Head of Strategic Development
Dan Bauer
Head of Talent
Doug Weidenheimer
Chief Pulsed Power Architect
Austin Steinforth, Ph.D.
Chief Laser Architect
Andrey Mironov, Ph.D.
Director of Experimental Science
Dennis Douglas, Ph.D.
Director of Optics
Milan Holec
Director of Theory and Computation
Science & Technology Advisory Board
Xcimer’s Science and Technology Advisory Board, made up of experts in fusion, laser technology and national security, is chaired by Mike Campbell. Feedback from the board informs Xcimer’s roadmap and ensures we remain focused on building the most scientifically credible roadmap in fusion.
Riccardo Betti, Ph.D.
Target Implosion Physics
Distinguished Professor of Mechanical Engineering and Physics & Astronomy, University of Rochester. Former Chair of the Division of Plasma Physics, American Physical Society.
Mike Campbell, D.Sc.
Board Chair
Former Director for University of Rochester's Laboratory For Laser Energetics (LLE). Former Associate Director for Lasers, LLNL. Former Senior Vice-President Energy, General Atomics.
David Crandall, Ph.D.
Fusion & National Security
Former Chief Scientist, NNSA.
Greg Van Dyk, Ph.D.
Fusion & National Security
Former Chief Scientist, DoD.
Roger Falcone, Ph.D.
Plasma Physics, HEDP
Former President, American Physical Society; Professor of Physics, UC Berkeley.
Javier Garay, Ph.D.
Laser Science & Materials Science
Professor and Director of the Fusion Engineering Institute, UC San Diego.
Mark J. Kushner, Ph.D.
Laser Science & Plasma Chemistry
Distinguished Professor of EECS, University of Michigan.
Rick Spielman, Ph.D.
Pulsed Power
Former Chief Scientist and Project Manager, Sandia Z-Machine; Professor of Physics, University of Rochester.
Jim Trebes, Ph.D.
Defense, National Security
Former Director for Directed Energy, DoD; Former Head of Physics, LLNL.
George Tynan, Ph.D., FAPS
Nuclear Engineering
Norm C. Rasmussen Adjunct Professor in Nuclear Engineering, MIT; Kazuo Iwama Endowed Distinguished Professor of Engineering Science, Emeritus, UC San Diego.
Founding Scientific Advisors
Before Xcimer was officially incorporated, a small group of physicists, scientists and engineers, including the inventors of the excimer laser, contributed their time and advice to help arrive at the compelling and practical power plant architecture we are now pursuing. We are grateful for their contributions.
Bedros Afeyan, Ph.D.
Founding Scientific Advisor
Paul Hoff, Ph.D.
Founding Scientific Advisor
William Krupke, Ph.D.
Founding Scientific Advisor
Joseph Mangano, Ph.D.
Founding Scientific Advisor
Tom Mehlhorn, Ph.D.
Founding Scientific Advisor
Allan Offenberger, Ph.D.
Founding Scientific Advisor
Michael Tobin
Founding Scientific Advisor
J. Gary Eden, Ph.D.
Founding Scientific Advisor
Our Investors







Our Locations
• XEC Locations
- Headquarters, Denver, CO
- Manufacturing Operations, Tucson, AZ
• Partner Locations
- Los Alamos National Laboratory (Los Alamos, NM)
- Lawrence Livermore National Laboratory (Livermore, CA)
- Oak Ridge National Laboratory (Oak Ridge, TN)
- Savannah River National Laboratory (Jackson, SC)
- Naval Research Laboratory (Washington, DC)
- Laboratory for Laser Energetics (Rochester, NY)
- Massachusetts Institute of Technology (Cambridge, MA)
- General Atomics (San Diego, CA)
- Westinghouse (Cranberry Township, PA)
- Universidad Nacional de Educacion a Distancia, UNED (Madrid, Spain)
