Fast third-order optical nonlinearities in metal alloy nanocluster composite glass: negative sign of the nonlinear refractive index

被引：37
作者：
Cattaruzza, E
Battaglin, G
Gonella, F
Mattei, G
Mazzoldi, P
Polloni, R
Scremin, BF
机构：
[1] INFM, I-30123 Venice, Italy
[2] Univ Venice, Dipartimento Chim Fis, I-30123 Venice, Italy
[3] INFM, I-35131 Padua, Italy
[4] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy
来源：
APPLIED SURFACE SCIENCE | 2005年 / 247卷 / 1-4期
关键词：
glass-based composites; nanoparticles; nonlinear optics; ion implantation;
D O I：
10.1016/j.apsusc.2005.01.060
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The fast component of the nonlinear refractive index, n(2), of a composite film formed by alloy nanoparticles embedded in silica was measured by Z-scan technique, in conditions free from cumulative heating effects. By using a single 6 ps long laser pulse at 1 Hz, 527 nm of wavelength, a negative sign of n(2) was evidenced. An explanation of this result is suggested, based on the dielectric confinement effect. The fast refractive index value, in modulus, is of the order of 10(-10) cm(2)/W. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：390 / 395
页数：6
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