High-performance all-optical limiting based on nonlinear refraction of metal-doped PbS/PVA freestanding nanocomposite films

Rahma, M. A.; Saadon, H. L.; Mahdi, M.A.

doi:10.1016/j.ijleo.2018.08.098

Cited by 14 publications

(7 citation statements)

References 19 publications

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“…Trying to analyze the effects of multi-metal polymer doping in [ 96 ], it was shown that combinations of Zn, Mg, and Cd formed doped PbS/PVA freestanding nanocomposite films. Pb(NO 3 ) 2 and PVA in deionized water generated the initial Pb 2+ /PVA solution, in which various concentrations of metal ions including Zn(NO 3 ) 2 , MgSO 4 , and Cd(NO 3 ) 2 were directly added.…”

Section: Tuning the Optical And Electronic Properties Of Doped Pva Filmsmentioning

confidence: 99%

“…for PbS/PVA) increased with increased dopant molar ratio for all prepared samples. The nature of the nonlinear refraction and the performances of the all-optical limiting of the films were investigated using the modified Z-scan technique [ 96 ] with a CW laser of 532 nm wavelength. Results showed an increase of less than a factor of two for the limiting threshold only between PbS/PVA and Zn-PbS/PVA doped with 0.008 M Zn, at a limiting threshold of 3 mW with an optical damage of 21 mW for a high dynamic range of 7.…”

Section: Tuning the Optical And Electronic Properties Of Doped Pva Filmsmentioning

confidence: 99%

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Metal Doped PVA Films for Opto-Electronics-Optical and Electronic Properties, an Overview

Bulinski

2021

Molecules

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Polyvinyl alcohol is unique among polymers. Apart from its preparation, it is not built up in polymerization reactions from monomers, unlike most vinyl-polymers, and it is biodegradable in the presence of suitably acclimated microorganisms. It is an environmentally friendly material for a wide range of applications, from medical ones, based on its biocompatibility, to integrated optics. This paper reviews, in addition to the preparation and optimization of films of polyvinyl alcohol doped with different metal species, the role of dopants and doping technologies in the involved electronic mechanism. The optical properties were studied by UV-VIS-IR, Mössbauer spectroscopy, and other measurement techniques, with applications such as real-time holography, microlasers, optical sensors or nanophotonics in mind.

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Section: Tuning the Optical And Electronic Properties Of Doped Pva Filmsmentioning

confidence: 99%

Section: Tuning the Optical And Electronic Properties Of Doped Pva Filmsmentioning

confidence: 99%

Metal Doped PVA Films for Opto-Electronics-Optical and Electronic Properties, an Overview

Bulinski

2021

Molecules

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“…Over several years, the investigation of nanocomposites based on polymers had significant interest because of their broad optical limiting, optical sensors, data processing, optical communication, and photonic applications [1][2][3][4][5]. From this point of view, the incorporation of inorganic nanoparticles with a polymer matrix is significant.…”

Section: Introductionmentioning

confidence: 99%

Investigation of key physical properties of new La@PbS filled Poly (vinyl and pyrrolidone) nanocomposite films for opto-electronics

Ali¹,

Shkir²,

Khairy³

2023

Phys. Scr.

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Polymer blends incorporated with various nanoparticles are the key components for obtaining new and advanced physical properties for a wide area of applications. Herein, poly (vinyl and pyrrolidone) blend films containing different content of La@PbS nanoparticles are well prepared by following the casting procedure. La-doped PbS nanoparticles were facile synthesized via a chemical route at low temperatures. The structure of compositions was investigated through XRD, TEM, AFM, and FTIR. UV-Visible spectroscopy shows that the absorption edge is redshifted to a higher wavelength and the absorbance increases with the La@PbS content. The direct and indirect transitions in the hybrid nanocomposites (HNCs) are reduced as the influence of filling percentage. Tauc’s model and quantum theory confirmed the presence of direct optical bandgap transitions in the HNC films. Urbach energy (Eu) and refractive index were also calculated. Through Wemple–Di Domenico's (WDD) model of single-oscillator the optical susceptibilities and nonlinear refractive index were estimated. The dielectric constant and electrical conductivity of the HNC films are influenced not only by frequency but also by the La@PbS percentage. The dominant mechanism in all films is related to barrier hopping (CBH) and follows Jonscher’s power (JP) performance.

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“…[8][9][10][11] The optical nonlinearity can be achieved in metal and semiconductors NCs-based NLO materials by one or more mechanisms such as free career absorption, reverse saturable absorption, self-focusing and defocusing, two-photon absorption (TPA), and nonlinear scattering, etc. [12][13][14] The nonlinearity of nano-scale NLO materials can be enhanced by combining them with particular device geometrics, including plasmonic nanostructures, 15 Fabry-Perot cavities, 16 and photonic crystal (PhC) structures 13 due to confinement of local field intensity within the medium. Scalora et al 17 first proposed the band edge shifting of photonic bandgap (PBG)-based optical limiting using nonlinear PBG material.…”

Section: Introductionmentioning

confidence: 99%

“… – 11 The optical nonlinearity can be achieved in metal and semiconductors NCs-based NLO materials by one or more mechanisms such as free career absorption, reverse saturable absorption, self-focusing and defocusing, two-photon absorption (TPA), and nonlinear scattering, etc 12 – 14 …”

Section: Introductionmentioning

confidence: 99%

Optical field enhanced nonlinear optical performance of chalcogenide nanocomposite-based 1D photonic crystal

Gadhwal,

Singh,

Devi

2023

J. Nanophoton.

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.The optical field enhanced nonlinear optical (NLO) absorption of spin-coated 10-layer and 20-layer 1D photonic crystal structures is demonstrated. A significant 2.5 fold increase in the two-photon absorption coefficient is reported for multilayer structures as compared to a single layer of semiconductor nanocomposite (NC) having a comparable thickness. Under high-intensity illuminance, increased nonlinear absorption could be accredited to the confinement of the optical field due to the localization of intensity. The carefully engineered multilayer structures embedded with semiconductor NCs can provide an attractive approach to designing practical NLO limiters and switches.

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High-performance all-optical limiting based on nonlinear refraction of metal-doped PbS/PVA freestanding nanocomposite films

Cited by 14 publications

References 19 publications

Metal Doped PVA Films for Opto-Electronics-Optical and Electronic Properties, an Overview

Metal Doped PVA Films for Opto-Electronics-Optical and Electronic Properties, an Overview

Investigation of key physical properties of new La@PbS filled Poly (vinyl and pyrrolidone) nanocomposite films for opto-electronics

Optical field enhanced nonlinear optical performance of chalcogenide nanocomposite-based 1D photonic crystal

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