Strength control in multiple optical traps generated by means of diffractive optical elements

Ali-Reza Moradi, E. Ferrari, V. Garbin, E. Di Fabrizio, D. Cojoc*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We present a simple technique to generate arrays of optical traps with different trapping forces. The arrays can be configured in two or three dimensions (2D, 3D) by means of phase diffractive optical elements (DOEs) displayed on a phase programmable modulator. DOEs design is based on the approach of spherical wave propagation and superposition, which enables to individually control the strength of the optical trap. Experimental results using silica beads trapped with different forces in 2D and 3D configurations are presented.

Original languageEnglish
Pages (from-to)158-161
Number of pages4
JournalOptoelectronics and Advanced Materials, Rapid Communications
Volume1
Issue number4
StatePublished - 2007
Externally publishedYes

Keywords

  • optical confinement and manipulation
  • binary optics
  • laser beam shaping
  • microscopy
  • spatial light modulators
  • TWEEZER ARRAYS
  • PARTICLES
  • ALGORITHM
  • PHASE

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