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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 9,
  • Issue 12,
  • pp. 120010-
  • (2011)

3D trapping and manipulation of micro-particles using holographic optical tweezers with optimized computer-generated holograms

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Abstract

A multi-plane adaptive-additive algorithm is developed for optimizing computer-generated holograms for the reconstruction of traps in three-dimensional (3D) spaces. This algorithm overcomes the converging stagnation problem of the traditional multi-plane Gerchberg-Saxton algorithm and improves the diffraction efficiency of the holograms effectively. The optimized holograms are applied in a holographic optical tweezers (HOT) platform. Additionally, a computer program is developed and integrated into the HOT platform for the purpose of achieving the interactive control of traps. Experiments demonstrate that the manipulation of micro-particles into the 3D structure with optimized holograms can be carried out effectively on the HOT platform.

© 2011 Chinese Optics Letters

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