Title

Shockwave based nonlinear optical manipulation in densely scattering opaque suspensions

Authors

Authors

E. Greenfield; J. Nemirovsky; R. El-Ganainy; D. N. Christodoulides;M. Segev

Comments

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Abbreviated Journal Title

Opt. Express

Keywords

POLYMER-SOLUTIONS; MEDIA; LIGHT; POLYSTYRENE; Optics

Abstract

Optical manipulation of particulate-loaded, highly scattering (opaque) suspensions is considered impossible. Here we demonstrate theoretically and experimentally optical manipulation of the local properties of such opaque suspensions. We show that the optical forces exerted by multiply-scattered light give rise to dense shock fronts of particle concentration, propagating deep inside the opaque suspensions, where the optical field is completely diffuse. We exploit these waves to demonstrate a plethora of optofluidic manipulations, ranging from optical transport and concentration of large populations of nanoparticles, to light-induced 'writing' of concentrated spots in the suspensions and light-induced phase-transition from suspension to gel in localized volumes inside the fluids. (C) 2013 Optical Society of America

Journal Title

Optics Express

Volume

21

Issue/Number

20

Publication Date

1-1-2013

Document Type

Article

Language

English

First Page

23785

Last Page

23802

WOS Identifier

WOS:000325549800075

ISSN

1094-4087

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