Spectral Mueller matrix measurements for characterization of depolarization from non-spherical gold nanoparticles

被引：4

作者：

Swami, M. K. ^{[1
]}

Patel, H. S. ^{[1
]}

Uppal, A. ^{[1
]}

Kushwaha, P. K. ^{[1
]}

Gupta, P. K. ^{[1
]}

机构：

[1] Raja Ramanna Ctr Adv Technol, Laser Biomed Applicat & Instrumentat Div, Indore 452013, Madhya Pradesh, India

来源：

OPTICS COMMUNICATIONS | 2013年 / 308卷

关键词：

Mueller matrix; Polarimetry; Polar decomposition; Plasmonics; Bio-medical imaging; DISCRETE-DIPOLE APPROXIMATION; LIGHT-SCATTERING; CELLS;

D O I：

10.1016/j.optcom.2013.06.016

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper we present the results of Mueller matrix measurements on depolarization characteristics of non-spherical gold nanoparticles (rods, tetra-pods, flowers and stars). The measurements show that for all the particle shapes investigated, the depolarization for circularly polarized light is larger than that for linearly polarized light by about a factor of two. Further, depolarization is largest for the rod shaped particles. The wavelength dependence of the depolarization characteristics of the particles was also investigated and the results are consistent with the calculated wavelength dependence of retardance and diattenuation properties of these nanoparticles using discrete dipole approximation. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：136 / 141

页数：6

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