Optical forces in higher order Bessel beam

0388098 - ÚPT 2013 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Šiler, Martin - Jákl, Petr - Chvátal, Lukáš - Zemánek, Pavel
Optical forces in higher order Bessel beam.
CPS 2012. 18th Czech-Polish-Slovak Optical Conference on Wave and Quantum Aspects of Contemporary Optics (Proceedings of SPIE Vol.8697). Bellingham: SPIE, 2012, 86970R:1-6. ISBN 978-0-8194-9481-8.
[CPS 2012. Czech-Polish-Slovak Optical Conference on Wave and Quantum Aspects of Contemporary Optics /18./. Ostravice (CZ), 03.09.2012-07.09.2012]
Grant CEP: GA MŠMT LH12018; GA MŠMT ED0017/01/01; GA ČR GPP205/12/P868
Institucionální podpora: RVO:68081731
Klíčová slova: Bessel beam * optical vortex * optical forces * generalized Lorenz-Mie theory * size-effect
Kód oboru RIV: BH - Optika, masery a lasery

Optical force acting upon a dielectric microparticle illuminated by a non-di racting vortex beam is expressed using the Generalized Lorenz-Mie theory (GLMT). Numerical results are presented for di erent widths and topological charges of the vortex beam. We show that such particle may be stably trapped either in the dark center of the vortex beam, in one of two stable positions placed o the optical axis, and as the third option it may circulate along almost circular trajectory having its radius smaller or equal to the radius of the smallest high intensity vortex ring.
Trvalý link: http://hdl.handle.net/11104/0218702