Minority investment · Hardware

RTX Ventures takes minority stake in Xcimer to advance laser testing

The company is operating a laser test system as it develops its technology for commercial and national-security use.

RTX Ventures made a minority investment in Xcimer Energy. The amount was not disclosed.

The financing supports accelerated development and real-world performance testing of excimer-based laser technology. The companies' September agreement explores integration and containerisation of multi-kilojoule systems for defence.

Xcimer is operating its Phoenix test system to validate the laser architecture. Both commercial fusion and defence applications remain in development.

Use of funds

Accelerate development and real-world testing of excimer-based laser technology

Funding history

Minority investment · This roundUndisclosed

Sources

  1. Xcimer Energy Receives Investment From RTX Venturesfinsmes.com · Sep 14, 2026
  2. xcimer.energy
  3. xcimer.energy
  4. xcimer.energy