Author: Xcimer Energy

June 11, 2025 Press

Xcimer Energy Completes First Private-Sector Electron-Beam Excimer Laser

Denver-based inertial fusion company’s electron-beam excimer laser is also the first of its kind built by any organization in more than 20 years; in May, it achieved the longest pulse length of any KrF laser.   Xcimer Energy announced today the completion and operation of the world’s first electron-beam-pumped excimer laser built in the private […]

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June 4, 2025 Press

Xcimer hires tech industry pioneer and forms science and technology advisory board as inertial fusion company accelerates growth

As Xcimer accelerates hiring, we’re proud to welcome Dr. Silvia De Dea—who helped build some of the most complex machines humans have ever created—as our new Head of Materials and Process Engineering. Alongside this key hire, we’re launching a world-class Science and Technology Advisory Board, bringing together top experts in fusion, engineering, and laser science to help advance Xcimer’s mission and explore adjacent markets.

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Xcimer Energy, Inc. 10325 E 47th Ave, Denver, CO 80238
March 3, 2025 Press

First Major Hardware Completed for Prototype Laser System, Validating Groundbreaking Fusion Energy Design

Xcimer Energy Inc. announced that it has completed the first key component of its prototype laser system, Phoenix, currently under development at its Denver facility. The newly completed Long Pulse Kinetics (LPK) platform is an electron-beam pumped excimer laser created to validate Xcimer’s modeling and design of such systems.  Xcimer’s fusion approach, which experts recognize […]

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A Xcimer employee inserts a copper sulfate solution resistor into a pulsed power system — part of the power supply for the laser amplifier.
February 17, 2025 Press

$4 Million in Federal Funding Awarded to Xcimer for Advancing Inertial Fusion Laser Efficiency

Funding Part of Advanced Research Projects Agency-Energy (ARPA-E) Program to Advance Technologies that Strengthen U.S. Energy Leadership Xcimer Energy Inc. announced that it has been selected to receive $4 million in funding from the U.S. Department of Energy Advanced Research Projects Agency-Energy (ARPA-E). The funding is part of the Vision OPEN 2024 projects, which offer […]

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An optical engineer works on a pulse compression cell.
November 29, 2024 Science

The Industrial Pathway to Inertial Fusion Energy

Xcimer Outlines the Industrial Approach to Scalable Fusion Power As the world looks toward practical fusion energy solutions, Xcimer is leading the way with an economically viable path to commercialization. In our paper, published in APL Science, we outline how our excimer laser system provides the first cost-effective, high-energy approach to scaling inertial fusion for […]

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The simulated density and ion temperature of the HDD target at peak compression with alpha deposition (Left) turned on and (Middle) turned off. The symmetry of the implosion is sufficient to ignite the DT fuel with high levels of margin (which will be quantified) and could be further tuned. For context, the same implosion is also shown in (Right) but at the scale of a NIF experiment.
November 27, 2024 Science

Advancing Fusion Target Design with Hybrid Direct Drive

Xcimer Publishes New Research on Optimizing Fusion Target Performance Xcimer Energy is committed to advancing inertial fusion energy (IFE) through breakthrough laser and target designs. Our latest peer-reviewed paper, published in Physics of Plasmas, introduces a novel hybrid direct drive (HDD) approach featuring a two-sided ultraviolet laser drive—a significant innovation in fusion target design that […]

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To demonstrate aspects of tuning, we show the time-average (Left) laser deposition L, (Middle) temperature T, and (Right) pressure p during pulse P2.
June 4, 2024 Press

$100 Million Raised to Advance Inertial Fusion Energy Toward Commercialization

Series A round will enable Xcimer to expand its team and build a prototype system to demonstrate the viability of its low-cost, high-energy laser approach Xcimer Energy Inc. today announced that it has raised $100 million in Series A financing led by Hedosophia, with participation from investors including Breakthrough Energy Ventures, Lowercarbon Capital, Prelude Ventures, […]

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