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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 3 — Feb. 1, 2014
  • pp: 474–477

Enhanced optical limiting in polystyrene–ZnO nanotop composite films

P. C. Haripadmam, Honey John, Reji Philip, and Pramod Gopinath  »View Author Affiliations


Optics Letters, Vol. 39, Issue 3, pp. 474-477 (2014)
http://dx.doi.org/10.1364/OL.39.000474


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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.

© 2014 Optical Society of America

OCIS Codes
(160.4330) Materials : Nonlinear optical materials
(160.5470) Materials : Polymers
(190.4180) Nonlinear optics : Multiphoton processes
(190.4360) Nonlinear optics : Nonlinear optics, devices
(310.1515) Thin films : Protective coatings
(160.4236) Materials : Nanomaterials

ToC Category:
Nonlinear Optics

History
Original Manuscript: September 19, 2013
Revised Manuscript: December 4, 2013
Manuscript Accepted: December 16, 2013
Published: January 20, 2014

Citation
P. C. Haripadmam, Honey John, Reji Philip, and Pramod Gopinath, "Enhanced optical limiting in polystyrene–ZnO nanotop composite films," Opt. Lett. 39, 474-477 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-3-474


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