A Brighter Future for the Jupiter Laser Facility

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Rick Cross works on the Titan compressor system at the Jupiter Laser Facility. The gratings (rainbow reflection) allow the Titan laser to provide peak power while preserving the optical components of the system. (Photo: Garry McLeod/LLNL)
Rick Cross works on the Titan compressor system at the Jupiter Laser Facility. The gratings (rainbow reflection) allow the Titan laser to provide peak power while preserving the optical components of the system (photo: Garry McLeod/LLNL).

April 15, 2025 | Originally published by Lawrence Livermore National Laboratory (LLNL) on March 26, 2025

Since the 1970s, the Janus laser, now part of the Jupiter Laser Facility (JLF), has served as an experimental proving ground to Lawrence Livermore National Laboratory’s (LLNL) laser and fusion programs and the broader high-energy-density and laser science communities.

Today, JLF is not only home to Janus — one of the world’s few hands-on laser platforms producing kilojoules of energy — but also Titan, a unique laser platform that combines high-energy pulses with long and extremely short pulse lengths, and COMET, a high-repetition, standalone, compact, multipulse terawatt laser system.

As one of the founding members of LaserNetUS — a constellation of laser facilities across North America — JLF is a prototype for the no-cost user facility model, operating on the idea that all researchers, regardless of their home institutions’ laser capabilities, should have access to the brightest light available.

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