title: Optical trapping and binding of particles in an optofluidic stable Fabry-Pérot resonator with single-sided injection.
abstract: In this article, microparticles are manipulated inside an optofluidic Fabry-Pérot cylindrical cavity embedding a fluidic capillary tube, taking advantage of field enhancement and multiple reflections within the optically-resonant cavity. This enables trapping of suspended particles with single-side injection of light and with low optical power. A Hermite-Gaussian standing wave is developed inside the cavity, forming trapping spots at the locations of the electromagnetic field maxima with a strong intensity gradient. The particles get arranged in a pattern related to the mechanism affecting them: either optical trapping or optical binding. This is proven to eventually translate into either an axial one dimensional (1D) particle array or a cluster of particles. Numerical simulations are performed to model the field distributions inside the cavity allowing a behavioral understanding of the phenomena involved in each case.
authors.affiliation: Université Paris-Est, ESYCOM EA2552, UPEMLV ESIEE Paris CNAM, Noisy-le-Grand, F-93162 France. noha.gaber@esiee.fr.
authors.forename: Noha
authors.initials: N
authors.lastname: Gaber
authors.forename: Maurine
authors.initials: M
authors.lastname: Malak
authors.forename: Frédéric
authors.initials: F
authors.lastname: Marty
authors.forename: Dan E
authors.initials: DE
authors.lastname: Angelescu
authors.forename: Elodie
authors.initials: E
authors.lastname: Richalot
authors.forename: Tarik
authors.initials: T
authors.lastname: Bourouina