Optical levitation in a Bessel light beam

Garcés-Chávez, V.; Roskey, D.; Summers, M.D.; Melville, H.; McGloin, D.; Wright, E.M.; Dholakia, K.
November 2004
Applied Physics Letters;11/1/2004, Vol. 85 Issue 18, p4001
Academic Journal
A vertically oriented zero order Bessel light beam is shown to create a one-dimensional array of trapped particles over extended (millimeter) distances. The particles take up equilibrium positions over the entire length of the beam and this is a consequence of the interplay between optical scattering and the self-healing properties of the Bessel beam. This work has analogies to recent studies of optically bound matter and allows for the simple creation of one-dimensional particle chains and their subsequent spectroscopic analysis.


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