On radiation forces acting on a transparent nanoparticle in the field of a focused laser beam

On radiation forces acting on a transparent nanoparticle in the field of a focused laser beam

Radiation forces acting on a transparent spherical nanoparticle in the field of a focused Gaussian laser beam are studied theoretically in the Rayleigh scattering regime. Expressions are derived for the scattering force and Cartesian components of the gradient force. The resultant force acting on a...

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Veröffentlicht in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2015-01, Vol.45 (10), p.904-907
Hauptverfasser: Afanas'ev, A.A., Gaida, L.S., Guzatov, D.V., Rubinov, A.N., Svistun, A.Ch
Format: Artikel
Sprache:eng
Schlagworte:
Beams (radiation)
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
focal length
Gaussian
Gaussian beam
Laser beams
LASERS
light scattering
nanoparticle
NANOPARTICLES
Nanostructure
OPTICAL PROPERTIES
permittivity
PHOTON BEAMS
polarisability
Quantum electronics
radiation forces
RAYLEIGH SCATTERING
Scattering
SPHERICAL CONFIGURATION
waist
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Beschreibung
Zusammenfassung:Radiation forces acting on a transparent spherical nanoparticle in the field of a focused Gaussian laser beam are studied theoretically in the Rayleigh scattering regime. Expressions are derived for the scattering force and Cartesian components of the gradient force. The resultant force acting on a nanoparticle located in the centre of a laser beam is found. The parameters of the focused beam and optical properties of the nanoparticle for which the longitudinal component of the gradient force exceeds the scattering force are determined. Characteristics of the transverse gradient force are discussed.
ISSN:1063-7818
1468-4799
DOI:10.1070/QE2015v045n10ABEH015798