Showing papers in "Optical Materials in 2017"

TL;DR: In this article, the authors introduce the concepts of periodicity, quasi-periodicity, and disorder in photonic crystals, focussing on the one-dimensional case, and report different types of disorder in 1D photonic structures and discuss their properties in terms of light transmission.

TL;DR: In this article, different types of charge transfer between a lanthanide and the host bands, and how they can be used to construct a host referred binding energy (HRBE) diagram, are reviewed.

TL;DR: In this article, the authors developed a graphical method for electronic transitions and band gap energy determination for samples in powder form, which can be used to evaluate the nature of electronic transition that occurs in a semiconductor material.

TL;DR: The influence of g-C3N4 in TiO2 photocatalyst on photodegradation of organic pollutant in aqueous solution has been investigated in this article.

TL;DR: In this article, the photoluminescence (PL) characterization of LiPbAlB glasses doped with Sm 3+ ions at varying concentrations have been studied by using absorption, excitation, emission, time resolved and confocal image measurements.

TL;DR: In this article, the effect of samarium concentration on the physical, structural and spectroscopic characteristics of lead alumino borate glasses has been reported and three phenomenological intensity parameters Ω2, Ω4 and Ω6.

TL;DR: In this paper, the physical, optical and luminescence properties of the glass samples were studied to evaluate their potential to using as luminecence materials for solid-state lighting applications.

TL;DR: In this article, a commercial Mn 4+ -doped phosphor with deep red emission has attracted attention in recent years, and the crystal structure, composition, and doping site were investigated using X-ray diffraction (XRD), Fourier transform infrared (FT-IR), and Raman spectra, respectively.

TL;DR: In this article, the authors reported the enhancement of the visible emissions of the Sm 3+ ions doped sodium-tellurite (TNS) glasses using emission and absorption measurements.

TL;DR: In this article, the structural, optical, plasmonic and photocatalytic properties of the Au-ZnO nanohybrid thin films were studied, and two peaks corresponding to the excitonic absorption of ZnO nano-structures in the UV region and the surface Plasmon resonance (SPR) absorption of Au nanoparticles in the visible region were found.

TL;DR: In this paper, the decay curves exhibit non-exponential nature at higher concentrations of Dy 3+ ion, and the quantum efficiency for the 4 F 9/2 level of 1.0% Dy 2 O 3 -doped glass is found to be 92%.

TL;DR: In this paper, the authors proposed a novel temperature sensor based on asymmetry in dual elliptical core photonic crystal fiber (DECPCF) structure featuring an enhanced sensitivity with wide detecting range over small distances.

TL;DR: LuAG:Mn 4+ has been successfully synthesized by sol-gel method and its temperature dependent luminescence has been investigated in the present work as discussed by the authors, which revealed that an extraordinary high sensitivity can be achieved from luminecence lifetime measurements covering physiological temperature range with a sensitivity of 3.75% K −1 at 38°C.

TL;DR: In this paper, the phonon energy and the electron-phonon coupling constant of Eu 3+ -doped tellurite glasses were derived from phonon side band spectrum.

TL;DR: In this article, 10CaF2 and B2O3 glasses were synthesized and their optical and spectroscopic properties were investigated in terms of tellurium oxide content and the increase of TeO2 in the glasses composition increases density, refractive index and electronic polarizability.

TL;DR: How the particular absorption and emission properties of this ion can be conveniently exploited for important biomedical applications, such as fluorescence imaging at both in-vitro and in vivo level, non-contact nanothermometry and photothermal therapy is discussed.

TL;DR: In this paper, the optical properties were studied using absorption and photoluminescence spectroscopy, and different structural groups were identified using FTIR and FT-Raman spectra.

TL;DR: In this paper, the concentration of Sm3+ ion doped 20 ZnO 10Li2O 10Na2O 60P2O5 glasses were analyzed by using, optical absorption spectroscopy, excitation and emission luminescence studies.

TL;DR: In this article, the growth of γ-glycine crystal from aqueous solution containing cesium chloride has been reported and the crystallographic data of the grown crystal has been experimentally determined by means of single crystal X-ray diffraction (XRD) technique.

TL;DR: In this article, the authors used the Inokuti-Hirayama model to determine radiative properties such as radiative transition probabilities (A R ), branching ratios (β R ), and radiative lifetime (τ R ) for certain luminescent levels of Sm 3+ ions.

TL;DR: In this article, the authors used decomposition method to acquire carbon quantum dots (CQDs) which can emission blue fluorescence under ultraviolet excitation and achieved the biological imaging of CQDs in vivo and in vitro.

TL;DR: In this paper, the effect of tartaric acid (TA) on laser induced nonlinear optical properties of KDOP crystal was investigated by means of Fourier transform infrared spectral analysis.

TL;DR: In this paper, the impact of the total angular momentum on the transition lifetime of Dy3+ doped borosilicate glasses using melt quenching technique and their optical characterizations are presented.

TL;DR: In this paper, the influence of reduction time on structural, linear and nonlinear optical properties of reduced graphene oxide (rGO) thin films synthesized by spin coating method is reported.

TL;DR: In this article, Li2O-MO-B2O3:0.5Dy2O 3 glasses mixed with four different alkaline earth modifier oxides MgO, CaO, SrO and BaO were synthesized by melt quench technique.

TL;DR: In this article, Co3O4 films were deposited on glass and FTO (F:SnO2) substrates by different solution molarities (0.05-0.20 m) through nebulizer spray technique.

TL;DR: In this article, high-light yields of the synthesized YAG:Ce ceramics were 18-21 photon/MeV for 1-5-at and 5-1-meV for 0.1-at.

TL;DR: In this paper, the latest research and development of neodymium phosphate laser glass at the Shanghai Institute of Optics and Fine Mechanics (SIOM), China, is addressed and compared to those of other commercial NEs from the Schott and Hoya companies and the Vavilov State Optical Institute (GOI), Russia.

TL;DR: In this paper, a series of Eu3+-doped SrNb2O6 phosphors have been successfully prepared by a high-temperature solid-state reaction technique.

TL;DR: In this article, a suited aluminate silicate garnet phosphor host MgY2Al4SiO12 with ideal crystallographic sites for the co-doping of Ce3+ and Mn2+ ions, was adopted to be the host.