Structural, third-order optical nonlinearities and figures of merit of ( E )-1-(3-substituted phenyl)-3-(4-fluorophenyl) prop-2-en-1-one under CW regime: New chalcone derivatives for optical limiting applications

Ekbote, Anusha; Patil, P. S.; Maidur, Shivaraj R.; Chia, Tze Shyang; Quah, Ching Kheng

doi:10.1016/j.dyepig.2017.01.002

Cited by 81 publications

(22 citation statements)

References 42 publications

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“…The nonlinearity changes the intensity of the laser beam at the detector and so intensity pattern is observed through the sample transit. This intensity variation is useful to calculate nonlinear refractive index (n nl ), nonlinear absorption (β) and third-order NLO susceptibility (χ (3) ). A continuous wave (CW) diode laser of wavelength 650 nm is used as source.…”

Section: Characterization Techniquesmentioning

confidence: 99%

“…The excitation energies, oscillator strengths ( f ) and the electron configuration for some of the excited states are presented in table 2. At HOMO, the electrons were localized in the phenyl ring of 4-NBA and when excited to LUMO, where electrons (3) 3.9524 × 10 −5 esu Imaginary part of χ (3) 5.9128 × 10 −5 esu Third-order nonlinear susceptibility, χ (3) 7.1122 × 10 −5 esu indicating that 4-NBA is a dielectric material. In the view of transparency (figure 7c), the crystal is widely transparent to all visible radiations (60%).…”

Section: Uv-visible Spectroscopic Studymentioning

confidence: 99%

“…4-NBA single crystal of thickness 0.5 mm was used to measure the nonlinear refractive index (n nl ), nonlinear absorption coefficient (β) and third-order NLO susceptibility (χ (3) ) using Z-scan technique. A lens of 8 cm focal length ( f ) was used to focus the laser beam.…”

Section: 6a Z-scan Techniquementioning

confidence: 99%

“…The electric field strength of laser and internal atomic fields of materials are nearly equal and so all the above facts are realized in a NLO material. Electro-optic modulation, optical imaging and parametric oscillation [1][2][3][4] are some added applications of NLO materials. Due to these growing applications of NLO materials, they are constantly attracting technological importance for a long time [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…selfdefocussing, nonlinear refraction (n nl ) and nonlinear absorption (β) are experimented in detail. In addition, third-order NLO susceptibility (χ (3) ) that cause self-defocussing in the crystal is also calculated from the experimental Z-scan measurements.…”

Section: Introductionmentioning

confidence: 99%

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Linear and nonlinear optical properties of 4-nitrobenzoic acid (4-NBA) single crystals

et al. 2018

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4-Nitrobenzoic acid (4-NBA) single crystals were studied for their linear and nonlinear optical properties. The crystals were grown by slow solvent evaporation method at room temperature. The structure and functional groups were confirmed by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopic studies. The 4-NBA crystal has an optical absorption at 263 nm and a wide transparency window for the visible light. Theoretical predictions for the measured optical absorption and charge transfer mechanism in 4-NBA were explained with HOMO and LUMO illustrations. The crystal is found to be birefringent and has produced an optical quality interference pattern. The optic plane of the crystal is observed along 100 direction. The crystal exhibits nonlinear optical effects viz. reverse saturable absorption and selfdefocussing of laser beam. Considerable nonlinear refraction (n 2) and nonlinear absorption (β) coefficients and third-order nonlinear optical susceptibility (χ (3)) were determined using Z-scan technique.

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Section: Characterization Techniquesmentioning

confidence: 99%

Section: Uv-visible Spectroscopic Studymentioning

confidence: 99%

Section: 6a Z-scan Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Linear and nonlinear optical properties of 4-nitrobenzoic acid (4-NBA) single crystals

et al. 2018

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Demonstration of Enhanced Saturable Absorption in Upconverter Integrated MoS₂ Heterostructure Thin Film Using Nanopulsed Green Laser

Durairaj,

Sabari Girisun

2023

Physica Status Solidi (b)

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Upconverter/MoS2 heterostructure thin films were fabricated by simple hydrothermal technique. X‐ray diffraction and Raman studies assures the formation of upconverter/ MoS2 heterostructure. FESEM and HRTEM revealed that the nanobelt structured MoS2 mingled with trapezoid structure fluoride upconverters and sphere shaped oxide upconverters in films. Bandgap of MoS2 heterostructure films increased to 3.21 eV (NaYF4: Yb, Er), 3.72 eV (YF3: Yb, Er), 3.54 eV (Y2O3: Yb, Er) and 3.43 eV (CeO2: Yb, Er) than 1.98 eV (MoS2). Also the films exhibit green (to ) and red (to ) emission in heterostructure films. The influence of upconverters on the nonlinear absorption of MoS2 was exploited by single beam Z‐scan technique using nano‐pulsed laser (532 nm, 9 ns, 10Hz, 1‐5 GW/m2). The saturable absorption of the MoS2 is enhanced through integration with upconverter nanoparticles. Estimated ground state absorption cross‐section is higher than the excited state cross‐section of the samples and it confirms the occurrence of saturable absorption. Carrier relaxation time calculations show the interband transition plays a significant role in saturable absorption of heterostructure thin films. Saturable absorption coefficient varies in the order of MoS2‐CeO2: Yb, Er (‐5.65 X 10‐10 m/ W) > MoS2‐YF3: Yb, Er (‐3.87 X 10‐10 m/ W) > MoS2‐NaYF4: Yb, Er (‐3.22 X 10‐10 m/ W) > MoS2‐Y2O3: Yb, Er (‐2.34 X 10‐10 m/ W) > MoS2 (1.42 X 10‐10 m/ W). CeO2: Yb, Er @ MoS2 exhibit stronger saturable absorption due to synergetic effects like higher linear absorption coefficient at 532 nm, stronger green emission and reduced size with nanosphere morphology. Our results that pave way for the design of optical switches, Q‐switches and mode lockers based on saturable absorbers using upconverter integrated MoS2 thin films.This article is protected by copyright. All rights reserved.

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A Novel Fluorescent Probe containing dihydropyrimidinone Analogue for Highly Sensitive, Selective Detection of Al(III) Ions with its Molecular Docking, ADME/T and Anticancer Impact

El‐Nahass,

Bakr,

Hamada

et al. 2024

ChemistrySelect

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In this investigation, a novel and promising chemosensor incorporating a dihydropyrimidinone moiety, namely; (E)‐4‐(4‐(dimethylamino)phenyl)‐5‐(3‐(4‐(dimethylamino)phenyl)acryloyl)‐6‐methyl‐3,4 dihydropyrimidin‐2(1H)‐one (DPDAD), has been successfully synthesized and characterized. The DPDAD chemosensor‘s response was evaluated in diverse solvents with varying polarities, shedding light on its solvatochromic behavior. The assessment of colorimetric and optical sensing attributes toward a range of metal ions such as Al(III), Cr(III), Mn II), Fe(III), Co(II), Ni(II), and Cu(II) was undertaken. Notably, DPDAD displayed discernible color alterations upon interaction with all the examined metal ions, with a significant bathochromic shift observed in the absorption spectra in the presence of Al(III), distinguishing it from the other metal ions. Furthermore, through detailed absorption and emission spectral analyses, DPDAD exhibited remarkable selectivity, sensitivity, and an on‐off‐on switchable behavior specifically with Al(III) ions, over the other metal ions. The binding constant was determined as 0.39×105 M−1, accompanied by a limit of detection (LOD) of 1.03×10−5 M. Notably, the DPDAD′s potential extends beyond metal ion sensing; it was computationally assessed for its capability to inhibit the γ‐secretase enzyme. Moreover, DPDAD′s antioxidant attributes were probed, and its inhibitory effect against a range of cancer cell lines was verified in‐vitro.

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Structural, third-order optical nonlinearities and figures of merit of ( E )-1-(3-substituted phenyl)-3-(4-fluorophenyl) prop-2-en-1-one under CW regime: New chalcone derivatives for optical limiting applications

Cited by 81 publications

References 42 publications

Linear and nonlinear optical properties of 4-nitrobenzoic acid (4-NBA) single crystals

Linear and nonlinear optical properties of 4-nitrobenzoic acid (4-NBA) single crystals

Demonstration of Enhanced Saturable Absorption in Upconverter Integrated MoS₂ Heterostructure Thin Film Using Nanopulsed Green Laser

A Novel Fluorescent Probe containing dihydropyrimidinone Analogue for Highly Sensitive, Selective Detection of Al(III) Ions with its Molecular Docking, ADME/T and Anticancer Impact

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Structural, third-order optical nonlinearities and figures of merit of ( E )-1-(3-substituted phenyl)-3-(4-fluorophenyl) prop-2-en-1-one under CW regime: New chalcone derivatives for optical limiting applications

Cited by 81 publications

References 42 publications

Linear and nonlinear optical properties of 4-nitrobenzoic acid (4-NBA) single crystals

Linear and nonlinear optical properties of 4-nitrobenzoic acid (4-NBA) single crystals

Demonstration of Enhanced Saturable Absorption in Upconverter Integrated MoS2 Heterostructure Thin Film Using Nanopulsed Green Laser

A Novel Fluorescent Probe containing dihydropyrimidinone Analogue for Highly Sensitive, Selective Detection of Al(III) Ions with its Molecular Docking, ADME/T and Anticancer Impact

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Demonstration of Enhanced Saturable Absorption in Upconverter Integrated MoS₂ Heterostructure Thin Film Using Nanopulsed Green Laser