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Behaviour of an optically trapped probe approaching a dielectric interface

SYSNO ASEP	0205624
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Ostatní články
Title	Behaviour of an optically trapped probe approaching a dielectric interface
Author(s)	Jákl, Petr (UPT-D)_{RID, ORCID, SAI} Šerý, Mojmír (UPT-D)_{RID, SAI} Ježek, Jan (UPT-D)_{RID, ORCID, SAI} Jonáš, Alexandr (UPT-D)_{RID, SAI, ORCID} Liška, M. (CZ) Zemánek, Pavel (UPT-D)_{RID, SAI, ORCID}
Source Title	Journal of Modern Optics - ISSN 0950-0340 Roč. 50, č. 10 (2003), s. 1615 - 1625
Number of pages	11 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	trapping beam ; optically trapped probe ; standing-wave
Subject RIV	BH - Optics, Masers, Lasers
R&D Projects	GA101/00/0974 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z2065902 - UPT-D
Annotation	The way in which reflection of the trapping beam from a dielectric interface influences the distance of the trapped sphere from the beam waist is studied theoretically and experimentally. The reflected wave interferes with the incident wave and they create a standing-wave component in the total axial intensity distribution. This component then modulates the trapping potential and creates several possible equilibrium positions for the trapped sphere. When the beam waist approaches the surface, the potential profile changes, which consequently causes jumps of the trapped probe from its current location to a deeper potential well. We suggested theoretically and proved experimentally that the magnitude of these unwanted jumps between the neighbouring equilibrium positions can be decreased by a suitable size of the sphere.
Workplace	Institute of Scientific Instruments
Contact	Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178
Year of Publishing	2004

Number of the records: 1