Enhanced optical limiting in polystyrene-ZnO nanotop composite films

被引：9

作者：

Haripadmam, P. C. ^{[1
]}

John, Honey ^{[2
]}

Philip, Reji ^{[3
]}

Gopinath, Pramod ^{[1
]}

机构：

[1] Indian Inst Space Sci & Technol, Dept Phys, Thiruvananthapuram 695547, Kerala, India

[2] Indian Inst Space Sci & Technol, Dept Chem, Thiruvananthapuram 695547, Kerala, India

[3] Raman Res Inst, Light & Matter Phys Grp, Bangalore 560080, Karnataka, India

来源：

OPTICS LETTERS | 2014年 / 39卷 / 03期

关键词：

THIN-FILMS;

D O I：

10.1364/OL.39.000474

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this work we investigate the optical limiting property of polystyrene-zinc-oxide (ZnO) nanotop composite films, using an open aperture Z-scan technique. The nanocomposites are prepared for different loading concentrations of ZnO and are fabricated using spin and dip coating techniques. On exposing the films to a pulsed nanosecond laser at 532 nm, the nonlinear absorption (NLA) coefficient is found to be greater for spin-coated films compared to dip-coated films. The measured NLA coefficient is found to be enhanced with an increase in loading concentration of ZnO in the monomer for both spin- and dip-coated films. (C) 2014 Optical Society of America

引用

页码：474 / 477

页数：4

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