title: Selective trapping of multiple particles by volume speckle field.
abstract: We suggest a new approach for selective trapping of light absorbing particles in gases by multiple optical bottle-beam-like traps created by volume speckle field. We demonstrate stable simultaneous confinement of a few thousand micro-particles in air with a single lowpower laser beam. The size distribution of trapped particles exhibits a narrow peak near the average size of an optical speckle. Thus, the speckleformed traps act as a sieve with the holes selecting particles of a similar size.
authors.affiliation: Laser Physics Center, Research School of Physics and Engineering, The Australian National University, Canberra ACT 0200, Australia. vgs124@physics.anu.edu.au
authors.forename: Vladlen G
authors.initials: VG
authors.lastname: Shvedov
authors.forename: Andrei V
authors.initials: AV
authors.lastname: Rode
authors.forename: Yana V
authors.initials: YV
authors.lastname: Izdebskaya
authors.forename: Anton S
authors.initials: AS
authors.lastname: Desyatnikov
authors.forename: Wieslaw
authors.initials: W
authors.lastname: Krolikowski
authors.forename: Yuri S
authors.initials: YS
authors.lastname: Kivshar