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Title: Enhanced optical limiting in polystyrene-ZnO nanotop composite films
Authors: Haripadmam, P.C.
John, Honey
Philip, Reji
Gopinath, Pramod
Issue Date: 1-Feb-2014
Publisher: Optical Society of America
Citation: Optics Letters, 2014, Vol. 39, p474-477
Abstract: 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.
Description: Restricted Access.
ISSN: 0146-9592
1539-4794 (Online)
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Copyright: 2014 Optical Society of America.
Appears in Collections:Research Papers (LAMP)

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