Optomechanical properties of optically self-arranged colloidal waveguides

0508799 - ÚPT 2020 RIV US eng J - Journal Article
Brzobohatý, Oto - Chvátal, Lukáš - Zemánek, Pavel
Optomechanical properties of optically self-arranged colloidal waveguides.
Optics Letters. Roč. 44, č. 3 (2019), s. 707-710. ISSN 0146-9592. E-ISSN 1539-4794
R&D Projects: GA ČR(CZ) GA18-27546S; GA MŠMT(CZ) LO1212; GA MŠMT ED0017/01/01
Institutional support: RVO:68081731
Keywords : hydrodynamic interaction * binding * particles
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 3.714, year: 2019
Method of publishing: Limited access
https://www.osapublishing.org/ol/abstract.cfm?uri=ol-44-3-707

When a suspension of wavelength-sized polystyrene spheres is illuminated with non-interfering counter-propagating Gaussian beams, the particles self-arrange into a colloidal waveguide (CWG). Mutual force interaction among particles is mediated by scattered light, referred to as the optical binding. We analyzed the longitudinal and lateral motion of particles in such CWGs made of an increasing number of particles with diameters of either 520 or 657 nm. We observed the enhancement of the binding stiffness of neighboring particles by more than an order of magnitude. This enhancement is done by optical means, mainly due to a local increase of optical intensity due to multiple light scattering in an optically bound structure.
Permanent Link: http://hdl.handle.net/11104/0299606