Livermore, CA--Lawrence Livermore National Laboratory (LLNL) has awarded two subcontracts for the High Repetition-Rate Advanced Petawatt Laser System (HAPLS), being built for the European Extreme Light Infrastructure (ELI) Beamlines science facility in the Czech Republic. The contracts were awarded to Femtolasers Produktions (Vienna, Austria) and Lasertel (Tucson, AZ).
The HAPLS will deliver peak powers greater than one petawatt at a repetition rate of 10 Hz, with pulses less than 30 fs, and require a laser front-end source to generate the ultrafast pulse at high stability with ultra-low noise. The Femtolasers' front-end system relies on double-chirped pulse amplification, enabling a high signal-to-noise ratio in the output pulses, which will seed the HAPLS.
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The front-end consists of an ultrashort pulse seed oscillator, a first stage multipass amplifier, a temporal pulse cleaning stage based on cross-wave polarization, a stretcher and pulse width controller system from LLNL, a spectral amplitude and phase shaper, and a booster amplification stage. It is due to be delivered to LLNL by August to provide performance data.
The ELI Beamlines facility represents an investment of approximately $350 million from the European Union and Czech Republic. It forms part of the pan-European ELI project, and is being designed to advance the state-of-the-art for high power lasers, allowing international scientific research in medical imaging, particle acceleration, biophysics, chemistry, and quantum physics.
In a related announcement, LLNL has awarded a contract for approximately $5 million to Lasertel to develop and deliver megawatt-class laser diode pump modules that combine semiconductor laser technology with novel micro-optics. The pump modules will be developed and delivered to LLNL over a 12-month period for integration into the HAPLS.