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A laser-driven particle accelerator, delivering a beam of electrons with a record-breaking energy of 4.2 giga-electron-volts, could lead to compact x-ray lasers or high-energy colliders.
Wave breaking in an optical fiber forms dispersive shock waves similar to undular bores in fluids.
The thermal wake left in air by a bundle of intense laser pulses can act as a channel for sending subsequent laser light over long distances.