Manipulating gradient forces on optical tweezers using Bessel beams

Autor(es)

Ambrosio, Leonardo A. ; Zamboni-Rached, Michel ; Hernandez-Figueroa, Hugo E. ; IEEE

• Tipo de documento: Artigo Científico
• Fonte: 2007 SBMO/IEEE MTT-S INTERNATIONAL MICROWAVE AND OPTOELECTRONICS CONFERENCE, VOLS 1 AND 2; v. N/A, p. 3-pg., 2007-01-01.

Resumo

In this paper, we show how one can change the stable equilibrium of a particle trapped into by optical tweezers through the intensity variation of superposed Bessel beams with different orders. The gradient forces acting on particles of different radii are determined, and the theoretical results indicate that it is possible to combine Bessel beams in such a way that a particle can be manipulated into or out the centre of the beam by exploiting their ring-shaped intensity patterns, without any mechanical displacement of the lasers. (AU)

• Processo FAPESP: 05/54265-9 - Ondas localizadas aplicadas a comunicações ópticas no espaço livre
• Beneficiário: Leonardo Andre Ambrosio
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 05/51689-2 - Centro de Pesquisa em Óptica e Fotônica - UNICAMP (CEPOF-UNICAMP)
• Beneficiário: Hugo Luis Fragnito
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs