Studies on Thermally Stimulated Nonlinear Absorption in Gelatin Stabilized Cu-PVP Nanocomposite Thin Films

Abstract:

This article reports investigations on thermally stimulated third order nonlinear absorption in Cu-PVP nanocomposite thin films. Cu nanoparticles have been obtained using chemical reduction method and thin films of Cu-PVP nanocomposites have been obtained using spin coating technique. Thin films have been characterized by X-ray diffraction (XRD), Ultraviolet-visible (UV-vis) spectroscopy, Fourier infra-red (FT-IR) spectroscopy, etc. for structural and linear optical studies. Third order nonlinear absorption studies have been performed using open aperture z-scan technique under continuous wave (CW) He-Ne laser. Cu-PVP nanocomposites are found to exhibit strong nonlinear absorption coefficient stimulated by thermal lensing effect.

• Periodical: Materials Science Forum (Volume 863)
• Pages: 85-89
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.863.85
• Online since: August 2016
• Authors: Y. S. Tamgadge*, Gajanan G. Muley
• Keywords: Cu Nanoparticles, Cu-PVP Nanocomposite, Nonlinear Absorption, Z-Scan

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