Enhanced optical limiting in nanosized mixed zinc ferrites

Chantharasupawong, Panit; Philip, Reji; Endo, Tamio; Thomas, Jayan

doi:10.1063/1.4724194

Cited by 45 publications

(15 citation statements)

References 20 publications

(20 reference statements)

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“…A simple but not very accurate estimation of the energy band gap, can be obtained using the Tauc plots [29,30]. So, the energy band gap of the aqueous dispersions of the fluorosurfactant stabilized GF, of the GF dispersed in DMF and of the aqueous dispersions of GO were determined to be approximately 4.56 (~272nm), 3.68 (~337nm) and 2.35 eV (~527.5nm) respectively.…”

Section: Resultsmentioning

confidence: 99%

Fluoro-graphene: nonlinear optical properties

Λιάρος¹,

Bourlinos²,

Zbořil³

et al. 2013

Opt. Express

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In the present work, we report on the investigation of the third-order nonlinear optical response of graphene fluoride dispersed in DMF and also of fluorosurfactant-stabilized graphene fluoride dispersed in water under visible (532 nm) and infrared (1064 nm), picosecond and nanosecond laser excitation. Both graphene derivatives were found to exhibit large nonlinear optical response, while significant differences on their nonlinear optical response have been observed (e.g. different sign of nonlinear refraction and absorption). These findings highlight the important role of the degree of fluorination of the graphene sheets on their optical and electronic properties. Furthermore, DMF dispersed graphene fluoride was found to exhibit important broadband optical limiting action under nanosecond laser excitation, making it promising candidate for optical limiting applications.

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Section: Resultsmentioning

confidence: 99%

Fluoro-graphene: nonlinear optical properties

Λιάρος¹,

Bourlinos²,

Zbořil³

et al. 2013

Opt. Express

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“…Optical limiting materials are capable of exhibiting significant promise for laser protection because of their nonlinear optical (NLO) properties [1,2,3,4]. Remarkable nonlinear optical properties have been reported in numerous materials, which mainly comprise organic compounds, inorganic semiconductors, noble metal clusters, fullerenes, graphene, and carbon nanotubes (CNTs) [5,6,7,8,9,10,11,12,13,14].…”

Section: Introductionmentioning

confidence: 99%

Effects of Different TiO2 Particle Sizes on the Microstructure and Optical Limiting Properties of TiO2/Reduced Graphene Oxide Nanocomposites

et al. 2019

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TiO2/reduced graphene oxide (rGO) nanocomposites with two different TiO2 particle sizes were synthesized by a facile hydrothermal method using two different source materials of Ti: tetrabutyl titanate (TBT) and commercial TiO2 powder (P25). For respective series with the same source materials, we investigated additions that optimized the nonlinear optical properties (NLO) and optical limiting (OL) performances, and we explored the relationships between structural diversity and performance. Several characterization techniques, including X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, and diffuse reflectance ultraviolet-visible spectroscopy (UV-Vis) were conducted to confirm the microstructures and chemical states of as-prepared materials. This indicated the existence of the Ti–O–C bond between rGO sheets and TiO2 particles and the reduction from precursor graphene oxide (GO) to rGO. The results of UV-Vis spectra revealed that the TiO2/rGO nanocomposites showed smaller band gaps than bare TiO2. A nanosecond open-aperture Z-scan technique at 1064 nm was applied to investigate NLO and OL properties. TiO2/rGO nanocomposites exhibited enhanced NLO and OL performances, arising from synergistic effects, compared to individual components. The TBT series samples performed better than the P25 series, presumably relevant to dimensional effects.

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“…However, compared to other materials, optical nonlinearities in ferrites have been relatively unexplored . Although modifications in optical nonlinearity caused by the inclusion of different transition metals into a spinel ferrite system have been reported, many archetypical ferrite materials like MnFe 2 O 4 have not yet been investigated.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Ultrafast Nonlinear Optical Response in Ferrite Core/Shell Nanostructures with Excellent Optical Limiting Performance

Perumbilavil

López‐Ortega

Tiwari

et al. 2018

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Nonlinear optical nanostructured materials are gaining increased interest as optical limiters for various applications, although many of them suffer from reduced efficiencies at high-light fluences due to photoinduced deterioration. The nonlinear optical properties of ferrite core/shell nanoparticles showing their robustness for ultrafast optical limiting applications are reported. At 100 fs ultrashort laser pulses the effective two-photon absorption (2PA) coefficient shows a nonmonotonic dependence on the shell thickness, with a maximum value obtained for thin shells. In view of the local electric field confinement, this indicates that core/shell is an advantageous morphology to improve the nonlinear optical parameters, exhibiting excellent optical limiting performance with effective 2PA coefficients in the range of 10 cm W (100 fs excitation), and optical limiting threshold fluences in the range of 1.7 J cm . These values are comparable to or better than most of the recently reported optical limiting materials. The quality of the open aperture Z-scan data recorded from repeat measurements at intensities as high as 35 TW cm , indicates their considerably high optical damage thresholds in a toluene dispersion, ensuring their robustness in practical applications. Thus, the high photostability combined with the remarkable nonlinear optical properties makes these nanoparticles excellent candidates for ultrafast optical limiting applications.

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Enhanced optical limiting in nanosized mixed zinc ferrites

Cited by 45 publications

References 20 publications

Fluoro-graphene: nonlinear optical properties

Fluoro-graphene: nonlinear optical properties

Effects of Different TiO2 Particle Sizes on the Microstructure and Optical Limiting Properties of TiO2/Reduced Graphene Oxide Nanocomposites

Enhanced Ultrafast Nonlinear Optical Response in Ferrite Core/Shell Nanostructures with Excellent Optical Limiting Performance

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