Nonlinear optical absorption of zinc-phthalocyanines in polymeric matrix

被引：30

作者：

Larciprete, M. C. ^{[1
]}

Ostuni, R. ^{[1
]}

Belardini, A. ^{[1
]}

Alonzo, M. ^{[1
]}

Leahu, G. ^{[1
]}

Fazio, E. ^{[1
]}

Sibilia, C. ^{[1
]}

Bertolotti, M. ^{[1
]}

机构：

[1] Univ Roma La Sapienza, Dipartimento Energet, I-00161 Rome, Italy

来源：

PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS | 2007年 / 5卷 / 2-3期

关键词：

nonlinear optics; molecular photonics;

D O I：

10.1016/j.photonics.2007.03.002

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We realized and investigated films of zinc-phtalocyanines into poly (methylmethacrylate) (PMMA) for optical limiting applications. The ratio by weight of the compound to the host polymer was 0.083% and 0.15%. Linear optical characterization of films, performed by spectrophotometry, show a low degree of molecular aggregation of zinc-phtalocyanines in the polymeric matrix. Two different type of nonlinear optical investigation were performed separately on the obtained films. Measurements of nonlinear transmission were carried out using a ns Nd:Yag laser followed by OPO (532 nm) and a nonlinear response was observed. From the experimental data, the nonlinear absorption coefficient 0 was retrieved and found to be 29 and 43 cm/GW, respectively. The measurements of was also performed via the z-scan technique on the same films, using 100 fs pulses at 800 am. At this wavelength, the nonlinear absorption coefficient was evaluated to be 0.40 and 0.23 cm/GW. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：73 / 78

页数：6

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