Ultrafast

In physics, ultrafast describes events that occur on femtosecond timescales. It was once impossible to observe anything that happened on this timescale due to the speed limitations of electronics and other experimental apparatus, but with advances in pulsed dye lasers and later the creation of the pulsed , which when mode-locked can create pulses as short as 5 femtoseconds (roughly two optical cycles) this regime has become accessible.

Related Topics:
Femtosecond - Dye laser - Mode-locked

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