Laser speckle field as a multiple particle trap

We demonstrate that a speckle pattern in the spatially coherent laser field transmitted by a diffuser forms a multitude of three-dimensional intensity micro-pockets acting as particle traps for air-borne light absorbing particles. Confinement of up to a few thousand particles in air with a unidirect...

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Bibliographic Details
Published inJournal of optics (2010) Vol. 12; no. 12; p. 124003
Main Authors Shvedov, V G, Rode, A V, Izdebskaya, Ya V, Leykam, D, Desyatnikov, A S, Krolikowski, W, Kivshar, Yu S
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.12.2010
Subjects
Aggregates
Beams (radiation)
Carbon
Coherence
Confinement
Diffusers
Lasers
Nanoparticles
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Summary:We demonstrate that a speckle pattern in the spatially coherent laser field transmitted by a diffuser forms a multitude of three-dimensional intensity micro-pockets acting as particle traps for air-borne light absorbing particles. Confinement of up to a few thousand particles in air with a unidirectional single beam has been achieved. Theoretical analysis of the speckle defined trapping volume is in a good agreement with experimental results on capturing of aggregates of carbon nanoparticles in air.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:2040-8986
2040-8978
2040-8986
DOI:10.1088/2040-8978/12/12/124003