Xcimer is building the most powerful and energetic lasers in the world, with precisely controlled energy output to meet the demanding requirements of national security.
Our technology contributes to energy autonomy for America, as well as Nuclear Weapons Effects Testing (NWET), stockpile stewardship, and directed energy.
Energy autonomy
America invented laser fusion and continues to lead the world for breakthroughs in the field.
Laser fusion runs on a self-sustaining fuel cycle: fusion neutrons bombard a lithium blanket, breeding the tritium needed for the next reaction. Both lithium and hydrogen isotopes are domestic, abundant, and effectively inexhaustible.
Commercial laser fusion is the most durable form of energy independence the United States can achieve.


Building bigger lasers
In 2025, Xcimer completed the first private-sector electron-beam excimer laser built in at least 20 years. By 2028, we expect to build the second largest laser in America; only Lawrence Livermore’s National Ignition Facility (NIF) will have more energy and power.
Vulcan, our laser system expected to be complete in 2031, is expected to be the largest in the world, delivering 4 megajoules on target, upgradeable to 12.
We’re closing a critical gap in national security requirements: the ability to test the survivability of critical military systems to levels that once required underground nuclear weapon testing.
Safeguarding survivability
The growing nuclear threat from Russia and especially China has prompted the United States to modernize its nuclear deterrent programs. The United States is also substantially increasing its reliance on space systems and sensors that need full system testing for nuclear survivability.
Today NIF conducts critical sub-component x-ray effects testing using its laser to generate x-rays. Xcimer’s MJ-scale laser, at 2 to 6 times more energy, will vastly expand this capability, providing for full-system testing. A substantial advantage of laser-generated x-rays over pulsed-power-generated x-rays is that a laser produces orders of magnitude less debris while testing.
With the capability to achieve fusion yields greater than 250-MJ, Xcimer will enable scientists to conduct relevant experiments that will continue to keep our nation’s nuclear arsenal reliable and safe.


Directed energy
Our electron-beam-pumped pulsed excimer laser technology unlocks unprecedented capabilities in instantaneous power, irradiation fluence, and impulse coupling compared to conventional solid-state architectures for directed energy. The use of multi-kilojoule, microsecond UV pulses offers a unique capability unmatched by any other laser technology.