Summary #602

Generation of extreme-ultraviolet beams with time-varying orbital angular momentum
  • New property of light discovered - researchers dub it the "self-torque" of light.
  • The self-torqued beam was produced by shooting infrared pulses at a gas target with a tiny, precise time delay.
  • The resulting beam essentially resembles a moving spiral.
  • It will open new avenues for quantum research, enabling super-fast laser-matter manipulation on nanometer scales.
  • This type of beam could also be used to control magnetic, topological, and quantum impulses, or manipulate molecules and nanostructures.


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