Laser achieves world record power at one pulse per second

The laser system for BELLA, the Berkeley Lab Laser Accelerator, has delivered a petawatt of power – a quadrillion watts – in a pulse just 40 femtoseconds long – a quadrillionth of a second – at one pulse per second. No other laser system has achieved this peak power at this pulse rate. BELLA's laser should soon be driving electron beams to 10-billion-electron-volt energies in an accelerator just one meter long.

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