With the weak spectroscopic quality factors Ω4/Ω6 (0.76), we expect a relatively prominent infrared laser emission. Keeping these observations in view, the present paper makes an attempt to present spectral investigations of Ho3+ doped lithium–fluoro-borate glasses of the compositions Li2B4O7–BaF2–NaF–MO (where M=Mg, Ca, Cd and Pb), Li2B4O7–BaF2–NaF–MgO–CaO and Li2B4O7–BaF2–NaF–CdO–PbO. Among all prepared glass samples, glass doped with 0.5 mol% Sm2O3 (LABS-4) shows highest emission intensity with CIE chromaticity coordinates x = 0.55 and y = 0.44 in the orange zone of the chromaticity diagram. This paper reports a novel method for fabricating nanotubes, in which the nanowire-templates were removed by simple heating in air. The glass selections available are neophane glass (left), holmium oxide glass (left center), and dydimium glass (right center). The embedding of Ag and Au NPs into the glass structure caused an increasing in the transition emission intensity of Sm3+ ions, which is ascribed to the progress of the presence of the localized surface Plasmon resonance (LSPR) indicating from the characteristic absorption peaks. One of us (VA) would like to thank the CSIR, New Delhi, for the award of a Senior Research Fellowship. This is the wavelength range that can cause a sunburn, so it's true you can't get a sunburn through glass. Here, similar pre-peaks are observed (at 8 nm− 1) which are interpreted with an analogous model. The fine distribution of NPs in the glass matrix with an average diameter ~ 11.09 nm and ~3.86 nm for Ag and Au NPs respectively were confirmed by using transmission electron microscope (TEM). In this article, Sm2O3 doped Lithium Alumino-borate (LABS) glasses were prepared by melt-quench technique. Judd-Ofelt theory in correlation with the emission and absorption profiles was performed for the measurement of various radiative parameters for different transitions of Er3+ doped glasses. There are more references available in the full text version of this article. The chemical composition of the samarium glass (1 M%) is as follows : 65TeO2+12B2O3+12P2O5+10Li2O We employed the quenching technique for samarium glass preparation reported in ref. Fused Silica is used for UV and visible components. Far infrared light is between 8000 and 16000 nm. Infra-red grades of Fused Silica are available for NIR use absorption bands, this can be clearly seen in figure -1. According to the obtained values of Ω2, Ω4 and Ω6, some radiative properties were theoretically determined. absorption bands, this can be clearly seen in figure 2-1. With the support of Judd-Ofelt theory, the intensity parameters and other radiative parameters were determined using optical absorption spectra from visible region to NIR region and reasonable less deviation obtained between the experimental and calculated oscillator strengths. These rare earth doped glasses were synthesized by melt quenching technique and an investigation was carried out to observe the structural (SEM and FT-IR) and optical (absorption and luminescence) properties. The larger value of Ω2 parameter in the studied glasses indicates the higher degree of covalence between the Sm3+ and O2− ions.The JO parameters values are greater than the reported glasses NZLS [16], CFBSm10 [34], B2O3TeO2P2O5Li2O3 [33] and LBTS [37] glasses signifying that, the symmetry around the Sm3+ion site is lower compared to the reported glasses.The spectroscopic quality factor χ = (Ω4/Ω6) characterizes the quality of glasses. The peak shape of the P–O distances changes strongly between NaPO3 and the NGP glass of 24 mol% but it is unchanged for the other NGP glasses. The corresponding behavior is described by a general equation which is based on the mole fractions of Na2O, P2O5, and GeO2 and the ratio n(NBO)/n(Na). DSC measurements show a good thermal stability of phosphate glasses. Fused Silica is a hard, high temperature pure glass. 59-69, Chemical Engineering Journal, Volume 170, Issue 1, 2011, pp. To confirm the unit cell parameters of the grown silver gallium telluride (AgGaTe2) crystal, single crystal X-ray diffraction studies were carried out. The glass selections available are neophane glass (left), holmium oxide glass (left center), and dydimium glass (right center). Glass that is transparent to visible light absorbs nearly all UVB. 44-49, Journal of Non-Crystalline Solids, Volume 390, 2014, pp. Trivalent Samarium doped multi-component Cadmium Lead Sodium Fluoro-Phosphate glass was prepared and characterized through optical absorption, emission and excitation measurements. Among these, only the brighter bands were chosen, in order to obtain the best-fit intensity parameters (Ωλ) with the Judd–Ofelt theory. It is observed that 1.5 mol% of Er3+ ions concentration is optimum to exhibit the maximum quantum efficiency, branching ratios, gain bandwidth, emission cross-section, gain cross-section and aptly suitable for visible and NIR photonic applications. 26-31, Physica B: Condensed Matter, Volume 450, 2014, pp. Moreover, the maximum σe × full-width-at-half-maximum is 327.8 for 5 mol% Er3+-doped PAZ glasses. The decay life time curve exhibited a non-exponential behavior of the studied glass samples and the results were compared with the similar reported glasses. A white light spectrum is obtained by inserting an equilateral prism just after the spherical lens. It is suggested that the maximum emission cross-section (σe) is 7.64 × 10− 21 cm2 at 1535 nm is observed for 3 mol% Er3+-doped PAZ glasses. Large fractions of six-coordinated Si are detected in Na2O–SiO2–P2O5 glasses with large P2O5 contents, and so six-coordinated Ge is expected in the structures of Na2O–GeO2–P2O5 (NGP) glasses with similar P2O5 contents. About Optics & Photonics Topics OSA Publishing developed the Optics and Photonics Topics to help organize its diverse content more accurately by topic area. Phosphate glasses with chemical compositions of (42– x/2) P2O5-(42– x/2)Na2O-15ZnO–xSm2O3 were synthetized by melt quenching method. The emission and excitation spectra of Sm3+ have been recorded under the excitation wavelength λex =399 nm and the emission wavelength λem =596 nm. By continuing you agree to the use of cookies. The regular glass absorbs wavelength longer than 4000 nm (4 uM) which is far-infrared, that is why laser cutting of glass and acrylic can be don on Co2 lasers with a wavelength of 10.6 uM. The morphology and structure of the composite nanowires were controlled by varying the heating temperature. Posted on 16.06.2019 (19.11.2020) by George Fomitchev. For chemical compositions with high mol% of V2O5, crystalline phases with the sequence V2O5, CdV2O6, and Cd2V2O7 were synthesized. If for example the UV transmittance edge (short wavelength edge) of the glass is shifted to shorter wavelengths, meaning that the glass has a good transmittance in the blue and near UV region, the dispersion of the glass in the visible (the slope of the n(λ) curve) is very low. The non-exponential decay curves fitted to I-H model reveals the interaction between the Sm3+ ions as dipole-dipole in nature. The spectrum of white light, without any absorbing glass, is shown at the right. https://doi.org/10.1016/S0025-5408(00)00267-1. By scanning electron microscopy, depending on the mol% of the reactants, different morphological structures for each crystalline and amorphous material were recorded. About 75% of UVA passes through ordinary glass. The predicted lifetime (τr) calculated by using JO method and the measured lifetime (τmea) determined experimentally for 4G5/2 level, were discussed and compared with those of other works. Fig. ♦ Silica Glass (SiO 2) Data Sheet ♦ Silica Glass (SiO 2) SDS ♦ Silica Glass (SiO 2) FDS (French) ♦ Silica Glass (SiO 2) Selection Guide. Fig. Last modified on Wednesday, 02 September 2020 16:15, « N2-31: ABSORPTION SPECTRUM OF CHLOROPHYLL, I6 Kinetic Theory and Statistical Mechanics, I7 Solid State and Low Temperature Physics, J2 Electrostatic Devices and Applications, M1 Interference and Diffraction - Slits and Gratings, M5 Interference and Diffraction Esoterica, N2-02: DIFFRACTION SPECTRA - THREE SOURCES - EXPENDABLE GRATINGS, N2-03: DIFFRACTION SPECTRUM OF SODIUM - EXPENDABLE GRATINGS, N2-04: DIFFRACTION SPECTRUM OF SODIUM - PROJECTION, N2-05 DIFFRACTION SPECTRA - MISCELLANEOUS TUBES, N2-06: DIFFRACTION SPECTRUM OF MERCURY - SUPERPRESSURE LAMP, N2-07: DIFFRACTION SPECTRUM OF HYDROGEN - HOLOGRAPHIC GRATINGS, N2-21: PRISMATIC SPECTRUM OF MERCURY - SUPERPRESSURE LAMP, N2-31: ABSORPTION SPECTRUM OF CHLOROPHYLL.