Ambrosio Leonardo A, Hernández-Figueroa Hugo E
School of Electrical and Computer Engineering (FEEC), Department of Microwaves and Optics (DMO), University of Campinas (Unicamp), 13083-970 Campinas-SP, Brazil.
Biomed Opt Express. 2011 Aug 1;2(8):2354-63. doi: 10.1364/BOE.2.002354. Epub 2011 Jul 22.
We investigate optical torques over absorbent negative refractive index spherical scatterers under the influence of linear and circularly polarized TEM(00) focused Gaussian beams, in the framework of the generalized Lorenz-Mie theory with the integral localized approximation. The fundamental differences between optical torques due to spin angular momentum transfer in positive and negative refractive index optical trapping are outlined, revealing the effect of the Mie scattering coefficients in one of the most fundamental properties in optical trapping systems.
我们在广义洛伦兹 - 米氏理论和积分局域近似的框架下,研究了线性和圆偏振TEM(00)聚焦高斯光束作用下吸收性负折射率球形散射体上的光扭矩。概述了正折射率和负折射率光阱中由于自旋角动量转移导致的光扭矩之间的根本差异,揭示了米氏散射系数在光阱系统最基本特性之一中的作用。