Flexible dual-beam geometry for advanced optical micromanipulation experiments

0352703 - ÚPT 2011 SK eng A - Abstract
Brzobohatý, Oto - Čižmár, T. - Dholakia, K. - Zemánek, Pavel
Flexible dual-beam geometry for advanced optical micromanipulation experiments.
17th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics. Žilina: Žilinská univerzita, 2010. s. 117. ISBN 978-80-554-0238-3.
[Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics /17./. 06.09.2010, Liptovsky Jan]
R&D Projects: GA ČR GA202/09/0348; GA MŠMT(CZ) LC06007; GA MŠMT OC08034; GA MŠMT ED0017/01/01
Institutional research plan: CEZ:AV0Z20650511
Keywords : optical tweezers * dual-beam trap * standing wave trap * spatial light modulator * optical microscopy
Subject RIV: BH - Optics, Masers, Lasers

We present a novel method for optical manipulation of microobjects and nanoobjects employing adaptive optical element to control properties of two counter-propagating beams overlapping in a sample chamber. We show that using this system one can eliminate optical aberrations in both pathways, online realign the system remotely from a computer interface, arbitrarily switch in real time between various beams types (i.e. Gaussian, Bessel, vortex) and their spatial intensity distributions (beam width, vorticity). We demonstrate optical manipulation of both high- and low-index particles in water or air, particle delivery in an optical conveyor belt using stationary mechanical components, formation of colloidal solitons, visualization of fluid flow in microcapillary as well as the rotation and reorientation of a trapped cell.
Permanent Link: http://hdl.handle.net/11104/0192154