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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1995),
  • paper QThG13

Calculation of optical trapping forces for micrometer-sized particles with a complex refractive index

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Abstract

Many experiments and force calculations1,2 relating to optical trapping for transparent particles have been carried out. Recently, optical trappings of micrometer-sized iron particles with a scanning laser beam3 and of nanometer-sized gold particles4 have been reported. We have also demonstrated optical trapping of micrometer-sized metal particles with a fixed laser beam.5 However, metal particles have a complex refractive index, and force calculations for these absorptive particles have, to our knowledge, not yet been reported.

© 1995 Optical Society of America

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