Refractive Indices of Solids

Бацанов, С. С.; Ruchkin, Evgeny D.; Poroshina, Inga A.

doi:10.1007/978-981-10-0797-2

Cited by 33 publications

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“…The process is repeated until the desired transient or steady‐state electromagnetic field behavior is fully evolved. For our FDTD simulations, optical constants were obtained from literature for CoFe 2 O 4 and MnFe 2 O 4 . The thinnest shell (1.5 nm) enhances the field by about 11% compared to the bare seeds, while the 2.5 nm shell enhances the field by about 100% (see Figure ).…”

Section: Resultsmentioning

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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Section: Resultsmentioning

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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“…Figure 1 shows an incident ray being refracted inside a new medium. According to Snell's law, if the angle of incidence (q i ) and the angle of refraction (q r ) are known, then the refractive index (n) is defined by Equation 1. In addition to a change in angle, the light velocity also changes between 2 media or phases, therefore, refractive index is also expressed as the ratio of phase velocity of the first medium (v i ) to phase velocity of the second medium (v r ) (Eq.…”

Section: Refractive Index Definitionmentioning

confidence: 99%

“…24 This is due to the presence of 3 different principal planes, in which one plane incorporates the optical axis. According to Batsanov et al, 1 the average refractive index for both optically uniaxial ðn OU Þ and optically biaxial ðn OB Þ crystals can be calculated by Equations 4 and 5.…”

Section: Refractive Index Definitionmentioning

confidence: 99%

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Refractive Index Measurement of Pharmaceutical Solids: A Review of Measurement Methods and Pharmaceutical Applications

Mohan

Kato

Drennen

et al. 2019

Journal of Pharmaceutical Sciences

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“…Where "n" is the frequency, "h" is the Planck's constant, "e" is the charge of electron, "1/4pe 0 " is a constant and is equal to 8.99 x 10 9 Nm 2 /C 2 , "c" is Lorentz field correction and is equal to n 0 (n 0 2 + 2) 2 /9, where n 0 is e refractive index of the material. Refractive index of GdBO 3 has been taken from an earlier report [35] and the value is found to be 1.82. The term is square of reduced matrix elements.…”

Section: Evaluation Of Judd-ofelt (Emission Intensity) Parameters Andmentioning

confidence: 99%

Synthesis Conditions on the Nature of GdBO₃ Phase Formed

et al. 2018

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Present study has been carried out to develop a facile synthetic methodology for preparing single phase monoclinic and triclinic forms of GdBO3, a potential phosphor material. This is achieved by varying annealing temperatures and annealing steps. Detailed structural studies, using X‐ray diffraction (XRD), Fourier transform infrared (FTIR) and Raman spectroscopic techniques confirmed that, Gd3+‐boric acid complexes formed initially at low temperatures (300 °C or less) get converted to monoclinic and triclinic forms of GdBO3 depending upon annealing temperatures, annealing steps and heating rates. Multiple steps with slow heating rates (∼3 °C/min) lead to the formation of single phase triclinic form of GdBO3. Two step heating with relatively faster heating rates (5 °C/min and above) results in single phase monoclinic GdBO3. FTIR and Raman studies also confirmed that boron exists only as BO4 structural units (in the form of B3O93− rings) in monoclinic GdBO3 and as BO3 structural units in triclinic GdBO3. Luminescence studies carried out with Eu3+ as a probe species confirmed more covalent nature around Eu3+/Gd3+ ions with improved red colour emission from triclinic form of GdBO3 compared to the monoclinic form.

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Refractive Indices of Solids

Cited by 33 publications

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

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

Refractive Index Measurement of Pharmaceutical Solids: A Review of Measurement Methods and Pharmaceutical Applications

Synthesis Conditions on the Nature of GdBO₃ Phase Formed

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Refractive Indices of Solids

Cited by 33 publications

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

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

Refractive Index Measurement of Pharmaceutical Solids: A Review of Measurement Methods and Pharmaceutical Applications

Synthesis Conditions on the Nature of GdBO3 Phase Formed

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Synthesis Conditions on the Nature of GdBO₃ Phase Formed