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
收藏
页码：474 / 477
页数：4
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