Fundamentals of negative refractive index optical trapping: forces and radiation pressures exerted by focused Gaussian beams using the generalized Lorenz-Mie theory

Author(s)

Ambrosio, Leonardo A. ^[1] ; Hernandez-Figueroa, Hugo E. ^[1]

Affiliation

^[1] Univ Campinas Unicamp, Dept Microwaves & Opt DMO, Sch Elect & Comp Engn FEEC, BR-13083970 Campinas, SP - Brazil

• Document type: Journal article
• Source: BIOMEDICAL OPTICS EXPRESS; v. 1, n. 5, p. 1284-1301, DEC 1 2010.
• Web of Science Citations: 16

Abstract

Based on the generalized Lorenz-Mie theory (GLMT), this paper reveals, for the first time in the literature, the principal characteristics of the optical forces and radiation pressure cross-sections exerted on homogeneous, linear, isotropic and spherical hypothetical negative refractive index (NRI) particles under the influence of focused Gaussian beams in the Mie regime. Starting with ray optics considerations, the analysis is then extended through calculating the Mie coefficients and the beam-shape coefficients for incident focused Gaussian beams. Results reveal new and interesting trapping properties which are not observed for commonly positive refractive index particles and, in this way, new potential applications in biomedical optics can be devised. (C) 2010 Optical Society of America (AU)

• FAPESP's process: 05/51689-2 - Optics and Photonics Research Center at UNICAMP
• Grantee: Hugo Luis Fragnito
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC