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'Movies' of electron motion in solar cell made using femtosecond laser

New technique combines electron microscopy with pulsed lasers to study semiconductor devices
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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 s...

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