Third-order nonlinear optical response of Ag–CdSe/PVA hybrid nanocomposite

Tripathi, S. K.; Kaur, Ramneek; Kaur, Jaspreet; Sharma, Mamta

doi:10.1007/s00339-015-9274-1

Cited by 24 publications

(10 citation statements)

References 51 publications

(54 reference statements)

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“…Increased value of n 2 in case of nanocomposite samples in contrast with the pure polymer is due to the presence of nanoparticles in the polymer matrix as it is clearly seen in Table 4. Similar behavior is studied by Tripathi et al 72 for Ag-CdSe/PVA hybrid nanocomposites.…”

Section: Optical Linear and Nonlinear Refractive Indexsupporting

confidence: 81%

Alteration of structural, optical and electrical properties of CdSe incorporated polyvinyl pyrrolidone nanocomposite for memory devices

Tyagi

Devi

2018

J. Adv. Dielect.

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The important enhancement in the structural, dielectric and optical properties of pure polymer and CdSe incorporated polyvinyl pyrrolidone has been reported in this paper. The surface morphology of CdSe/PVP nanocomposite film is studied by using scanning electron microscopy (SEM). The chemical composition of different elements has been reported using energy dispersive X-ray (EDX) spectrum. The structure of polymer nanocomposite is determined with the help of X-ray diffraction (XRD) spectrum and is observed to be hexagonal. Particle size, intercrystalline separation, interplanner spacing, lattice parameters, strain and dislocation factors are calculated using XRD results. Fourier transform infrared spectroscopy (FTIR) and Photoluminescence (PL) analysis have been studied in order to check the possible interaction between CdSe quantum dots and polyvinyl pyrrolidone (PVP) matrix. The ac conductivity of CdSe/PVP nanocomposite is found to be higher as compared to pure polymers. The highest value of conductivity observed at 60203 Hz and at 523 K is found to be [Formula: see text][Formula: see text]Sm[Formula: see text]. Comparative study of dielectric constant, dielectric losses, dissipation factor, electric modulus and impedance has been performed. The semi-circles in impedance measurement for both materials show the bulk electrical properties that result in single relaxation process in CdSe/PVP nanocomposite.

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Section: Optical Linear and Nonlinear Refractive Indexsupporting

confidence: 81%

Alteration of structural, optical and electrical properties of CdSe incorporated polyvinyl pyrrolidone nanocomposite for memory devices

Tyagi

Devi

2018

J. Adv. Dielect.

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“…Herein, the pure CdSe PNC was marked as sample A. Ag-CdSe hybrid PNC was prepared via a colloidal chemical synthesis technique by mixing the required amounts of Ag colloids with CdSe PNC. 108 The volume fraction of Ag was changed by keeping the volume of CdSe PNC constant. The prepared nanocomposite samples had the composition Ag(x)-CdSe PNC, with x ¼ 0.1, 0.2, and 0.3%, and these samples were marked as B, C, and D, respectively.…”

Section: Colloidal Chemical Synthesismentioning

confidence: 99%

“…Values of the linear absorption coefficients (a) and nonlinear parameters extracted from the Z-scan measurements108 …”

mentioning

confidence: 99%

Nonlinear optical properties of metal nanoparticles: a review

2017

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Metal nanoparticles (MNPs) hold great technological promise because of the possibility of engineering their electronic and optical properties through material design. One of the effective methods to fabricate MNPs is ion implantation. In this review, recent results on the nonlinear optical properties of nanoparticles (including copper, silver, gold, and bismuth nanoparticles) doped in various bases have been discussed. Some specific optical nonlinear properties, such as nonlinear refraction, two-photon absorption, and optical limiting, for femtosecond, picosecond, and nanosecond laser pulses have also been covered. In addition to ion implantation, we have summarized several other methods for the preparation of composite materials, and Z-scan has been used to study the nonlinear optical properties of these materials.

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“…7(b). The closed aperture (CA) plot shows a valley to peak nature which exhibits strong self-focusing with positive nonlinear refraction [12][13][14][15][16]. The data were analysed using the procedures described by Sheik-Bahae et al [22].…”

Section: Z-scan Resultsmentioning

confidence: 99%

“…In order to resolve it, different substrates were used for making ZnS thin films to extract the true values of nonlinear optical coefficients of ZnS nanoparticles [8][9][10][11]. In recent years, self standing nanocomposite films containing semiconducting nanoparticles embedded in polymer matrix have been widely attracted by many researchers due to the following factors: (a) mono-dispersion of nanoparticles can be easily achieved in polymer matrix, (b) true nonlinear optical coefficients of nanoparticles can be obtained, (c) easy preparation and estimation of nonlinear optical coefficients, (d) improved thermal and mechanical stabilities [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Study on the Third-Order Nonlinear Optical Properties of Cd2+ Ion Doped Zns/PVP Nanocomposite FilmsB. Suresh1, S. Ramachandran1 and G. Shanmugam2

Suresh¹,

Ramachandran²,

Shanmugam³

2021

Preprint

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Cd2+ ion doped ZnS/PVP nanocomposite films have been prepared using in-situ chemical method. XRD studies confirm the cubic structure of ZnS for all the films and the nanocrystallite size of ZnS is found to varying from 3.82 to 4.07 nm with Cd doping. The morphology of the films has been analyzed using SEM micrograph which shows the mono dispersion of ZnS nanoparticles in PVP matrix. The interaction between ZnS nanoparticles and PVP polymer matrix has been discussed using FTIR spectra. Optical absorption spectra of the films reveal the blue shift on the absorbance onset with the comparison of bulk ZnS and the estimated optical band gap energy decreases with increasing the concentration of Cd dopant. Photoluminescence spectra show a blue emission peak for all the films. The Z-scan results of three samples show a reverse saturation absorption process in open Z-scan experiment and self-focusing behavior in closed Z-scan experiment. Both ZnS/PVP and Cd2+ ion doped ZnS/PVP films exhibited the large optical nonlinearity and the value of nonlinear refractive index (n2), nonlinear absorption coefficient (β), third-order nonlinear optical susceptibility (χ(3)) and figure of merit (FOM) increase with Cd doping. The estimated n2, β, χ(3) and FOM values were found to be high for 6 mol% Cd doped ZnS/PVP nanocomposite film and they are about 1.771⋅10− 10 m2 W− 1, 4.148⋅10− 3 mW− 1, 1.603⋅10− 4 esu and 9.576⋅10− 6 esu m respectively. The experimental results clearly showed that the Cd2+ ion doped ZnS/PVP nanocomposite film is a worthy candidate for the future nonlinear optical device fabrication.

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Third-order nonlinear optical response of Ag–CdSe/PVA hybrid nanocomposite

Cited by 24 publications

References 51 publications

Alteration of structural, optical and electrical properties of CdSe incorporated polyvinyl pyrrolidone nanocomposite for memory devices

Alteration of structural, optical and electrical properties of CdSe incorporated polyvinyl pyrrolidone nanocomposite for memory devices

Nonlinear optical properties of metal nanoparticles: a review

Study on the Third-Order Nonlinear Optical Properties of Cd2+ Ion Doped Zns/PVP Nanocomposite FilmsB. Suresh1, S. Ramachandran1 and G. Shanmugam2

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