The Promise of Fusion Energy
The University of Arizona is leading the next frontier in fusion energy research and commercialization, harnessing the power of the stars to deliver a safe, sustainable, and virtually limitless energy source here on Earth.
Powering the Digital World
The rise of AI, cloud computing, and streaming services has driven an explosive demand for energy-intensive data centers. These digital engines require constant, reliable power—making clean, baseload energy from fusion a vital part of meeting the world’s growing computing needs without increasing carbon emissions.
Energy Equity Across the Globe
Around 750 million people still live without electricity, and more than two billion rely on unsafe fuels for cooking. Fusion energy could close this gap, offering safe, affordable, and sustainable power to communities worldwide—improving health, education, and opportunity.
In the News
What’s next for fusion energy?
Research, Innovation & Impact's Distinguished Lecture Series launched with a visit from fusion energy leader Dr. Edward Moses, who shared insights on laser-driven fusion and what it means for climate solutions, energy security, and innovation at Arizona.
University of Arizona plans big role in world's fusion energy chase
“We’re now in a race to commercialize fusion, to bring fusion to the market — to put electrons from fusion energy, from fusion reactions, on the grid"
Fusion must be a national priority for the future of US energy security
President Suresh Garimella and Dr. Tomás Díaz de la Rubia Urge Prioritizing Fusion in this opinion editorial in The Hill.
Our Goals
- Advance R&D: Target critical challenges in advanced materials, chemical and systems engineering, high-power laser development, and plasma science, and develop engineering designs with robust market potential.
- Build the workforce: Develop experiential learning, professional training programs, and certificate pathways to prepare the next generation of fusion experts.
- Foster public-private partnerships: Collaborate with national laboratories, the U.S. Department of Energy, utility companies, and industry leaders to accelerate lab-to-market strategies and commercial scale-up.
- Establish a Research, Development, Test and Evaluation center of excellence in southern Arizona to integrate component technologies into fusion system prototypes to reduce the technology risk across the entire laser fusion supply chain.
- Grow the startup ecosystem: Establish Arizona as a dynamic home for fusion startups and pave the way for the nation’s first commercial fusion power plants.
- Capitalize on established commercialization platforms: Utilize Tech Launch Arizona, the University of Arizona Center for Innovation, and Tech Parks Arizona to turn breakthrough research into meaningful solutions with market entry potential.
Understanding the Science
Laser-driven inertial confinement fusion uses a hohlraum (a special cylindrical enclosure) to generate X-rays that heat and compress a fuel-containing capsule containing isotopes of hydrogen (deuterium and tritium). These X-rays, produced by high-powered lasers heating the hohlraum, then drive the capsule implosion, achieving the conditions necessary for nuclear fusion.
- Hohlraum: An enclosure, usually made of gold or tungsten, that surrounds the fuel capsule. It’s designed to efficiently convert laser energy into X-rays.
- X-ray Generation: High-powered lasers heat the hohlraum, causing it to emit a large quantity of X-rays.
- Ablation and Implosion: These X-rays from the hohlraum rapidly heat the outer surface of the fuel capsule, causing it to be vaporized (ablated). This creates a rocket-like effect that drives the capsule inwards, compressing and heating the fuel to extreme conditions.
- Fuel Compression and Heating: The implosion rapidly compresses the fuel (typically deuterium-tritium) to very high densities and temperatures. The fuel is held together by its own inertia, hence the term inertial confinement.
- Fusion Reactions: When the fuel reaches the necessary density and temperature, fusion reactions begin, releasing energy.
The Science Up Close
The target chamber under construction. Holes in the target chamber provide access for the laser beams and viewing ports for NIF diagnostic equipment.
Photo courtesy of Lawrence Livermore National Laboratory
Before each experiment, a positioner precisely centers the target inside the target chamber and serves as a reference to align the laser beams.
Photo courtesy of Lawrence Livermore National Laboratory
NIF Target Area operators inspect a final optics assembly (FOA) during a routine maintenance period. Each FOA contains four integrated optics modules that incorporate beam conditioning, frequency conversion, focusing, diagnostic sampling, and debris shielding capabilities into a single compact assembly. This process takes several weeks and comprises more than 235 tasks.
Photo by Jason Laurea
NIF Senior Mechanical Technologist Drew Willard adjusts a pulse compressor, part of the optical parametric chirped pulse amplification laser system in LLNL’s Advanced Concepts Laboratory. This ultrashort pulsed laser system is used for laser technology research and development in small-scale proof-of-principle experiments. It also tests and qualifies the resistance of various types of optics to laser-induced damage, which quantifies and validates the operational limits of NIF’s Advanced Radiographic Capability1 (ARC) laser system.
Photo by Jason Laurea
The target chamber was assembled from 10-centimeter-thick aluminum panels.
Photo courtesy of Lawrence Livermore National Laboratory
Robot tenting machine (RTM) operator Cres Alday observes as the RTM applies the ultra-thin “tents” that suspend NIF targets inside the hohlraum. The robot has improved the consistency and quality of the targets and reduced technician training time for applying tents from three months for manual application to two weeks (see “Target Fabrication Steps Up to the Challenge”1).
Photo by James PryatelMeet Our Team
Our renowned faculty are driving advances that will shift Earth from energy scarcity to energy abundance—placing Arizona at the center at this growing industry.
Tomás Díaz de la Rubia
Senior Vice President for Research and Partnerships
As Senior Vice President for Research and Partnerships at the University of Arizona, Tomás Díaz de la Rubia is spearheading strategic efforts to position the university as a global leader in fusion energy. A physicist and national lab veteran, he integrates science, technology, and policy to advance fusion as a key pillar of UArizona’s research and innovation agenda.
Horst Hahn
Special Advisor to the Senior Vice President for Research & Partnerships
A renowned materials scientist and foreign member of the National Academy of Engineering, Horst Hahn is leading the University of Arizona’s fusion energy initiatives. With decades of experience in advanced materials, nanotechnology, and energy systems, he is shaping interdisciplinary research, strategic partnerships, and national collaborations to drive the commercialization of fusion energy.
University announces massive investment to aid development of limitless energy machine
Continuing coverage: University of Arizona President Suresh Garimella and Tomás Diaz de la Rubia, senior vice president of research and innovation, are positioning the U of A to become the leading academic institution on fusion energy, partnering with the private sector and the U.S. government on that mission.