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Single-beam Trapping in Front of Reflective Surfaces

SYSNO ASEP	0205399
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Ostatní články
Title	Single-beam Trapping in Front of Reflective Surfaces
Author(s)	Jonáš, Alexandr (UPT-D)_{RID, SAI, ORCID} Zemánek, Pavel (UPT-D)_{RID, SAI, ORCID} Florin, E. L. (DE)
Source Title	Optics Letters. - : Optical Society of America - ISSN 0146-9592 Roč. 26, č. 19 (2001), s. 1466-1468
Number of pages	3 s.
Language	eng - English
Country	US - United States
Keywords	optical trapping ; standing wave ; two-photon-excited fluorescence
Subject RIV	BH - Optics, Masers, Lasers
R&D Projects	GA101/98/P106 GA ČR - Czech Science Foundation (CSF)
	GA202/99/0959 GA ČR - Czech Science Foundation (CSF)
	GA101/00/0974 GA ČR - Czech Science Foundation (CSF)
	IAC1065004 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ	AV0Z2065902 - UPT-D
Annotation	We show that the optical trapping of dielectric particles by a single focused beam in front of a weakly reflective surface is considerably affected by interference of the incident and reflected beams, which creates a standing-wave component of the total field. We use the two-photon-excited fluorescence from a trapped dyed probe to detect changes in the distance between the trapped beam focus as the focus approaches the reflective surface. This procedure enables us to determine the relative strengths of the single-beam and the standing-wave trapping forces. We demonstrate that, even for reflection from a glass-water interface, standing-wave trapping dominates, as far as 5 ćm from the surface.
Workplace	Institute of Scientific Instruments
Contact	Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178
Year of Publishing	2002

Number of the records: 1