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Theoretical comparison of optical traps created by standing wave and single beam
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SYSNO ASEP 0205627 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název Theoretical comparison of optical traps created by standing wave and single beam Tvůrce(i) Zemánek, Pavel (UPT-D) RID, SAI, ORCID
Jonáš, Alexandr (UPT-D) RID, SAI, ORCID
Jákl, Petr (UPT-D) RID, ORCID, SAI
Ježek, Jan (UPT-D) RID, ORCID, SAI
Šerý, Mojmír (UPT-D) RID, SAI
Liška, M. (CZ)Zdroj.dok. Optics Communications. - : Elsevier - ISSN 0030-4018
Roč. 220, 4-6 (2003), s. 401 - 412Poč.str. 12 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova single beam trap ; optical trapping ; optical tweezers Vědní obor RIV BH - Optika, masery a lasery CEP GA101/00/0974 GA ČR - Grantová agentura ČR CEZ AV0Z2065902 - UPT-D Anotace We used generalised Lorenz-Mie scattering theory (GLMT) to compare submicron-sized particle optical trapping in a single focused beam and a standing wave. We focus especially on the study of maximal axial trapping force, minimal laser power necessary for confinement, axial trap position, and axial trap stiffness in dependency on trapped sphere radius, refractive index, and Gaussian beam waist size. In the single beam trap (SBT), the range of refractive indices which enable stable trapping depends strongly on the beam waist size (it grows with decreasing waist). On the contrary to the SBT, there are certain sphere sizes (non-trapping radii) that disable spher e confinement in standing wave trap (SWT) for arbitrary value of refractive index. For other sphere radii we show that the SWT enables confinement of high refractive index particle in wider laser beams and provides axial trap stiffness and maximal axial trapping force at least by two orders and one order bigger than in SBT, respectively. Pracoviště Ústav přístrojové techniky Kontakt Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Rok sběru 2004
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