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Complex colloidal structures with non-linearoptical properties formed in an optical trap

SYSNO ASEP	0535416
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Complex colloidal structures with non-linearoptical properties formed in an optical trap
Author(s)	Brzobohatý, Oto (UPT-D)_{RID, ORCID, SAI} Chvátal, Lukáš (UPT-D)_{RID, ORCID, SAI} Šiler, Martin (UPT-D)_{RID, ORCID, SAI} Zemánek, Pavel (UPT-D)_{RID, SAI, ORCID}
Number of authors	4
Source Title	Optics Express. - : Optical Society of America - ISSN 1094-4087 Roč. 28, č. 25 (2020), s. 37700-37707
Number of pages	8 s.
Publication form	Online - E
Language	eng - English
Country	US - United States
Keywords	optical trapping ; nonlinear optical medium ; artificial materials
Subject RIV	BH - Optics, Masers, Lasers
OECD category	Optics (including laser optics and quantum optics)
R&D Projects	GA18-27546S GA ČR - Czech Science Foundation (CSF)
	LO1212 GA MŠk - Ministry of Education, Youth and Sports (MEYS)
	ED0017/01/01 GA MŠk - Ministry of Education, Youth and Sports (MEYS)
	EF16_026/0008460 GA MŠk - Ministry of Education, Youth and Sports (MEYS)
Method of publishing	Open access
Institutional support	UPT-D - RVO:68081731
UT WOS	000596707100050
EID SCOPUS	85097474862
DOI	10.1364/OE.405839
Annotation	llumination of a colloidal suspension of dielectric nanoparticles (50 nm in radius)with counter-propagating non-interfering laser beams of sufficient power leads to spatial redistri-bution of particles due to associated optical forces and formation of colloidal structures composedof thousands of nanoparticles along the beams. We employ a weak probe beam propagatingthrough the colloidal structure and demonstrate that the colloidal structure acts effectively as anon-linear optical medium, similar to a gradient index lens, with optical transformation propertiesexternally tunable by trapping laser power. With an increasing number of nanoparticles weobserve the formation of a more complex colloidal structure axially and even laterally and weexplain the origin of this process.
Workplace	Institute of Scientific Instruments
Contact	Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178
Year of Publishing	2021
Electronic address	https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-28-25-37700&id=444109

Number of the records: 1