Time-average forces over Rayleigh particles by superposition of equal-frequency arbitrary-order Bessel beams

被引：17

作者：

Ambrosio, Leonardo Andre ^{[1
]}

Ferreira, Mariana de Matos ^{[2
]}

机构：

[1] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Elect & Comp Engn, BR-13566590 Sao Carlos, SP, Brazil

[2] Univ Sao Carlos, Ctr Exact Sci & Technol, Dept Phys, BR-13565905 Sao Carlos, SP, Brazil

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2015年 / 32卷 / 05期

关键词：

DOUBLE-NEGATIVE PARTICLES; LORENZ-MIE THEORY; REFRACTIVE-INDEX; OPTICAL FORCES; FROZEN WAVES; DIELECTRIC SPHERE; RADIATION FORCES; SCATTERING; TWEEZERS; SHAPE;

D O I：

10.1364/JOSAB.32.000B67

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigate optical forces exerted by suitable superpositions of equal-frequency Bessel beams-frozen wave-sover dielectric, magnetodielectric, and negative-index Rayleigh particles. Frozen waves are capable of providing virtually any desired longitudinal intensity pattern by adequately superposing arbitrary-order Bessel beams, serving as potential beams in optical trapping, atom guiding, optical bistouries, and so on. Analytical expressions for gradient and scattering forces experienced by very small particles are deduced, and our numerical examples reveal that both low-and high-index dielectric and magnetodielectric particles can be efficiently trapped and manipulated. Our results indicate that such wave fields could actually provide three-dimensional traps in multiple transverse planes. (C) 2015 Optical Society of America

引用

页码：B67 / B74

页数：8

共 34 条

[21] Determination of complex refractive index of polystyrene microspheres from 370 to 1610 nm [J].