Nonlinear-optical parameters of thin C60films at 532 nm

An inserted type Ag/TeO2-SiO2composite gel glass was prepared through silver nanoparticles embedded in TeO2-SiO2composite gel. The silver nanoparticles were prepared previously by ascorbic acid deoxygenates AgNO3solution and mixed into TeO2-SiO2composite sol which was prepared in aqueous system using TeO2and tetraethoxysilane as precursors, and then the inserted type Ag/TeO2-SiO2composite gel glass was produced through sol aging and molding. The silver nanoparticles which dispersed in the TeO2-SiO2gel substrate made the composite glass having excellent nonlinear optical properties. The nonlinear optical parameters was tested by Z-scan technique using 15 ps laser pulses at the wavelength of 532 nm. The surface morphology was characterized by SEM. The results identified that spherical Ag nanoparticles with the size about 50-100 nm dispersed in the TeO2-SiO2gel. In the Ag/TeO2-SiO2material, the doped structure and the trigonal bipyramid structure of TeO2was the important factor for the excellent nonlinear optical performance.

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Photophysics and NLO properties of Ga(III) and In(III) phthalocyaninates bearing diethyleneglycol chains

Journal of Porphyrins and Phthalocyanines ◽

10.1142/s1088424618500128 ◽

2018 ◽

Vol 22 (01n03) ◽

pp. 137-148 ◽

Cited By ~ 2

Author(s):

Muthumuni Managa ◽

Samson Khene ◽

Jonathan Britton ◽

Alexander G. Martynov ◽

Yulia G. Gorbunova ◽

...

Keyword(s):

Thin Films ◽

Nonlinear Optical ◽

Photophysical Properties ◽

Optical Parameters ◽

Absorption Coefficients ◽

Time Resolved ◽

Nlo Properties ◽

Optical Behavior ◽

532 Nm ◽

Reverse Tendency

This work reports on synthesis and characterizations of Ga(III) and In(III) complexes, formed by 2,3-bis[2[Formula: see text]-(2[Formula: see text]-hydroxyethoxy)ethoxy]-9,10,16,17,23,24-hexa-[Formula: see text]-butoxy phthalocyanine (1H2) coordinating acetatoindium(III) (1InOAc) and hydroxogallium(III) (1GaOH) Photophysical properties of hydroxogallium(III) phthalocyaninate 1GaOH and acetatoindium(III) phthalocyaninate 1InOAc were studied by UV-vis, fluorescence spectroscopy and time-resolved methods. The nonlinear absorption of the complexes was studied using the Z-scan technique at 532 nm and 10 ns pulse in DMSO and in thin films formed by composite with poly(bisphenol A carbonate) — PBC. The magnitude of absorption coefficients and other nonlinear optical parameters estimated in this work showed that complex 1InOAc exhibited the strongest nonlinear optical behavior in comparison with 1GaOH in solution and a reverse tendency when embedded in PBC thin films. DFT calculations were used to rationalize these results.

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Exfoliated Bi2Te3 nanoparticle suspensions and films: morphological and nonlinear optical characterization

Nanophotonics ◽

10.1515/nanoph-2021-0335 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Rashid A. Ganeev ◽

V. S. Popov ◽

A. I. Zvyagin ◽

N. A. Lavrentyev ◽

A. E. Mirofyanchenko ◽

...

Keyword(s):

Thin Films ◽

Nonlinear Optical ◽

Nonlinear Refraction ◽

Colloidal Suspensions ◽

Saturable Absorption ◽

Reverse Saturable Absorption ◽

Optical Parameters ◽

Probe Radiation ◽

Saturation Intensity ◽

532 Nm

Abstract Bismuth telluride nanoparticles (NPs) attract attention due to the growth of sensitivity of the Bi2Te3 NPs-containing registrars in the near- and mid-infrared ranges. We describe the synthesis and characterization of these structures and analyze the low-order nonlinear optical properties of the colloidal suspensions and thin films containing Bi2Te3 NPs using 1064 and 532 nm, 10 ns pulses. Colloidal Bi2Te3 NPs demonstrate saturable absorption and positive nonlinear refraction (saturation intensity 7 × 108 W cm−2, nonlinear absorption coefficient β SA = −7 × 10−8 cm W−1, nonlinear refractive index γ = 9 × 10−12 cm2 W−1), while at stronger excitation by 532 nm, 10 ns pulses the reverse saturable absorption dominates over other nonlinear optical processes. We achieved significant growth of the nonlinear optical parameters of the thin films containing these NPs (film thickness l = 60 nm, β SA = −1.2 × 10−4 cm W−1, γ = 5 × 10−7 cm2 W−1 in the case of 532 nm probe radiation and β = −5 × 10−5 cm W−1, γ = 6 × 10−8 cm2 W−1 in the case of 1064 nm probe radiation) compared with colloidal Bi2Te3 NPs and discuss the observed peculiarities of the nonlinear response of Bi2Te3 nanostructures.

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Flexible Methyl Cellulose/Polyaniline/Silver Composite Films with Enhanced Linear and Nonlinear Optical Properties

Polymers ◽

10.3390/polym13081225 ◽

2021 ◽

Vol 13 (8) ◽

pp. 1225

Author(s):

Ali Atta ◽

Mostufa M. Abdelhamied ◽

Ahmed M. Abdelreheem ◽

Mohamed R. Berber

Keyword(s):

Refractive Index ◽

Optical Properties ◽

Band Gap ◽

Nonlinear Optical ◽

Composite Films ◽

Methyl Cellulose ◽

Carbon Cluster ◽

Nonlinear Susceptibility ◽

Optical Parameters ◽

Flexible Polymer

In order to potentiate implementations in optical energy applications, flexible polymer composite films comprising methyl cellulose (MC), polyaniline (PANI) and silver nanoparticles (AgNPs) were successfully fabricated through a cast preparation method. The composite structure of the fabricated film was confirmed by X-ray diffraction and infrared spectroscopy, indicating a successful incorporation of AgNPs into the MC/PANI blend. The scanning electron microscope (SEM) images have indicated a homogenous loading and dispersion of AgNPs into the MC/PANI blend. The optical parameters such as band gap (Eg), absorption edge (Ed), number of carbon cluster (N) and Urbach energy (Eu) of pure MC polymer, MC/PANI blend and MC/PANI/Ag films were determined using the UV optical absorbance. The effects of AgNPs and PANI on MC polymer linear optical (LO) and nonlinear optical (NLO) parameters including reflection extinction coefficient, refractive index, dielectric constant, nonlinear refractive index, and nonlinear susceptibility are studied. The results showed a decrease in the band gap of MC/PANI/AgNPs compared to the pure MC film. Meanwhile, the estimated carbon cluster number enhanced with the incorporation of the AgNPs. The inclusion of AgNPs and PANI has enhanced the optical properties of the MC polymer, providing a new composite suitable for energy conversion systems, solar cells, biosensors, and nonlinear optical applications.

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Nonlinear optical properties of colloidal carbon nanoparticles: nanodiamonds and carbon dots

RSC Advances ◽

10.1039/c4ra04714a ◽

2014 ◽

Vol 4 (76) ◽

pp. 40152-40160 ◽

Cited By ~ 32

Author(s):

Irene Papagiannouli ◽

Athanasios B. Bourlinos ◽

Aristides Bakandritsos ◽

Stelios Couris

Keyword(s):

Optical Properties ◽

Carbon Dots ◽

Carbon Nanoparticles ◽

Nonlinear Optical ◽

Laser Excitation ◽

Optical Limiting ◽

Nonlinear Optical Properties ◽

Nlo Response ◽

Colloidal Carbon ◽

532 Nm

Nanodiamonds (NDs) and carbon-dots (CDs) suspensions exhibit significant NLO response under both ps and ns laser excitation. NDs exhibit important optical limiting action under nanosecond visible (532 nm) and infrared (1064 nm) laser excitation.

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Nonlinear optical parameters of fullerene films and solutions

Quantum Electronics ◽

10.1070/qe2000v030n12abeh001871 ◽

2000 ◽

Vol 30 (12) ◽

pp. 1087-1090 ◽

Cited By ~ 1

Author(s):

R A Ganeev ◽

A I Ryasnyansky ◽

M K Kodirov ◽

T Usmanov

Keyword(s):

Nonlinear Optical ◽

Optical Parameters

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The Preparation and Characterization of Novel Nonlinear Optical Active Dye

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.750-752.899 ◽

2013 ◽

Vol 750-752 ◽

pp. 899-902

Author(s):

Lin Feng Li ◽

Hong Yao Xu

Keyword(s):

Optical Properties ◽

Optical Property ◽

Nonlinear Optical ◽

Nonlinear Optical Property ◽

Condensation Reaction ◽

Nonlinear Optical Properties ◽

532 Nm ◽

Triazine Dye

A novel nonlinear optical active triazine dye 2-(4-methyl-4-amino-azobenzene )-4-sodium sulfanilate-6-chloro-1,3,5-triazine was synthesized by condensation reaction and characterized by FTIR, 1HNMR, respectively. Their nonlinear optical properties were investigated using 5 ns pulse at 532 nm, which showed excellent nonlinear optical property.

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Investigation of the third-order nonlinear optical properties in porphyrin solutions in the picosecond regime

Journal of Nonlinear Optical Physics & Materials ◽

10.1142/s0218863515500307 ◽

2015 ◽

Vol 24 (03) ◽

pp. 1550030 ◽

Cited By ~ 14

Author(s):

M. Chniti ◽

C. Cassagne ◽

J. L. Godet ◽

G. Boudebs

Keyword(s):

Refractive Index ◽

Optical Properties ◽

Time Dependence ◽

Nonlinear Optical ◽

Optical Response ◽

Spectral Width ◽

Incident Laser ◽

Third Order ◽

The Third ◽

532 Nm

The D4σ-Z-scan technique is used to evaluate the sign and the magnitude of the nonlinear (NL) refractive index and the NL absorption (NLA) coefficient with a laser delivering single pulses in the picosecond regime at 355 nm, 532 nm and 1064 nm. The NL optical response of the zinc porphyrins (Pph) has been found to be significantly enhanced. The study of the NLA and refraction is performed, taking into account the time dependence and the spectral width of the incident laser. The variations of the NL coefficients as a function of the intensity and the concentration are provided and are found to be linear.

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