Optical alignment and spinning of laser-trapped microscopic particles

  title={Optical alignment and spinning of laser-trapped microscopic particles},
  author={M. Friese and T. Nieminen and N. Heckenberg and H. Rubinsztein-Dunlop},
  • M. Friese, T. Nieminen, +1 author H. Rubinsztein-Dunlop
  • Published 1998
  • Physics
  • Nature
  • Light-induced rotation of absorbing microscopic particles by transfer of angular momentum from light to the material raises the possibility of optically driven micromachines. The phenomenon has been observed using elliptically polarized laser beams or beams with helical phase structure,. But it is difficult to develop high power in such experiments because of overheating and unwanted axial forces, limiting the achievable rotation rates to a few hertz. This problem can in principle be overcome… CONTINUE READING
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