Speckle Field As A Multiple Particle Trap
- Conference date: 18–22 April 2010
- Location: Santa Fe, (New Mexico)
We demonstrate that a speckle pattern in the spatially coherent laser field transmitted by a diffuser forms a multitude of three‐dimensional bottle‐shaped micro‐traps. These multiple traps serve as a means for an effective trapping of large number of air‐born absorbing particles. Confinement of up to a few thousand particles in air with a single beam has been achieved. Theoretical analysis of the speckle defined trapping volume and the trapping light power is in a good agreement with experimental results on capturing of aggregates of carbon nanoparticles in air.
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