Optical waveguiding in suspensions of dielectric particles

被引：49

作者：

Conroy, RS ^{[1
]}

Mayers, BT

Vezenov, DV

Wolfe, DB

Prentiss, MG

Whitesides, GM

机构：

[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[2] Harvard Univ, Dept Chem & Biol Chem, Cambridge, MA 02138 USA

来源：

APPLIED OPTICS | 2005年 / 44卷 / 36期

关键词：

D O I：

10.1364/AO.44.007853

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An optical waveguide formed by a suspension of dielectric nanoparticles in a microchannel is described. The suspensions, chosen for their guiding and scattering properties, are silica and polystyrene particles that have diameters of 30-900 nm and are dispersed in water with volume fractions up to 10%. Changing the diameter and concentration of the particles causes the suspensions to transition from Rayleigh to Mie scattering and from single to multiple scattering. The threshold for optical guiding in a waveguide core composed of these suspensions is set by the numerical aperture of the effective refractive-index difference introduced by the suspension and not by the average interparticle distance. (c) 2005 Optical Society of America.

引用

页码：7853 / 7857

页数：5

共 14 条

[1] An experiment to measure Mie and Rayleigh total scattering cross sections [J].