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Submission + - Scientists create attosecond(1e-18s) laser. (laserfocusworld.com)

BytePusher writes: "Collaborators at CEN Saclay (Gif-sur-Yvette, France), École Polytechnique (Palaiseau, France), and the University of Toronto (Toronto, Ont., Canada) have used a chain of plasma mirrors to create extreme-ultraviolet (EUV) pulses that they predict to be on the attosecond timescale, all with a tabletop laser." http://www.laserfocusworld.com/display_article/294 636/12/ARCHI/none/News/ULTRAFAST-LASERS:-Plasma-mi rrors-generate-high-harmonics
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Scientists create attosecond(1e-18s) laser.

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We warn the reader in advance that the proof presented here depends on a clever but highly unmotivated trick. -- Howard Anton, "Elementary Linear Algebra"

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