Femtosecond Lasers Create 3-D Midair Plasma Displays You Can Touchhttp://spectrum.ieee.org/tech-talk/consumer-electronics/audiovideo/femtosecond-lasers-create-3d-midair-plasma-displays-you-can-touch by shk • 11 years ago 1 0 11 years agoSPspectrum.ieee.org