Investigation of nonlinear refraction and nonlinear absorption of semiconductor nanoparticle solutions prepared by laser ablation

被引：67

作者：

Ganeev, RA ^{[1
]}

Ryasnyansky, AI ^{[1
]}

Tugushev, RI ^{[1
]}

Usmanov, T ^{[1
]}

机构：

[1] NPO Akadempribor, Tashkent 700125, Uzbekistan

来源：

JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS | 2003年 / 5卷 / 04期

关键词：

semiconductor nanoparticles; nonlinear refraction; nonlinear absorption;

D O I：

10.1088/1464-4258/5/4/317

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigated As2S3 and US nanoparticle aqueous solutions prepared by laser ablation. Nonlinear optical characteristics of these solutions were studied by the Z-scan technique using Nd:YAG laser second harmonic radiation (lambda = 532 nm, t = 55 ps). Nonlinear refractive indices, nonlinear absorption coefficients and third-order nonlinear susceptibilities of these solutions were measured. The comparison of nonlinear optical characteristics of As2S3 and US thin films and nanoparticle solutions was performed. It was shown that nonlinear refractive indices of As2S3 and US nanoparticles decreased with a growth in laser intensity. High nonlinear optical susceptibilities of such structures were attributed to size-related effects.

引用

页码：409 / 417

页数：9

共 42 条

[1] Semiconductor clusters, nanocrystals, and quantum dots [J].