Xcimer Energy develops high-repetition-rate, short-pulse laser systems for inertial confinement fusion power plants using direct-drive implosions. The company focuses on diode-pumped solid-state lasers capable of delivering gigajoule-class energy at kilohertz repetition rates to enable continuous fusion energy production. Their target market is the baseload clean energy sector, aiming to provide utilities and power producers with compact, economical fusion reactors. Xcimer was founded in 2022 by veterans from General Atomics' laser fusion program and has raised $45 million in Series A funding led by Breakthrough Energy Ventures, with participation from investors including Temasek and Congruent Ventures. The team includes experts from Lawrence Livermore National Laboratory and other fusion research institutions. Headquarters are in San Diego, California, near key suppliers and talent pools. Early milestones include demonstration of high-energy laser pulses and partnerships for target fabrication.