Development of a New Glass for both Visible and Near-Infrared Optical Applications

Abstract

A glass system of composition 40P2O5-40ZnO-(20-x)Na2O-xCdO (where, x = 1, 2, 3, 4, 5 and 6 mol%) was prepared using the conventional melt quenching technique. The glass formability of the prepared samples was inspected using XRD technique. Archimedes’ method was used to determine the density of the prepared glass samples then the molar volume was calculated. The optical spectroscopic investigations of the prepared glass samples were carried out over the spectral range (190-2500 nm). The proposed glass showed a successive transparency in both visible and near-IR ranges of spectrum till 2500 nm with considerably high transmission of about 78%. The refractive index of the glass samples with some other useful parameters such as dielectric constant, electric susceptibility and electronic polarizability of the prepared glass were evaluated. The results suggest the practicality of utilizing such new glass in the fabrication of optical supplies such as lenses and optical windows used for Nd:YAG lasers. The metallization criteria data of the prepared glass propose a good basis for predicting new nonlinear optical materials.

Physical and Optical Characterization of Manganese Ions in Sodium-Zinc -Phosphate Glass Matrix

“…This can be explained in view of the structural changes in the glass network where the optical transmission of the glass is oppositely related to the absorption behavior. Comparing the present data with that of the previous work [28], it can be observed that the transparency of the prepared glass in the visible-near IR spectral range is improved where it reaches a maximum value of about 86% at concentration 3% of MnO. With such higher transmission, the present glass is suggested to join the family of new glasses which can be used effectively in different optical applications such as optical filters, IR domes, modulators, lenses and laser windows especially for Nd:YAG lasers because their fundamental and second harmonic modules of typically emit light in IR-range of 1064 nm and visible range of 532 nm respectively.…”

“…In the above equation the value of n = 1/2 , 2 , 3/2 or 3 according to direct allowed transitions , indirect allowed transitions , direct forbidden transitions or indirect forbidden transitions respectively. It is convenient to take n = 2 when dealing with glassy state referring to indirect absorption mechanism in which the interactions with lattice vibrations is involved [28]. Therefore, the optical band gap can be evaluated by plotting of ( ) ½ versus as shown in Fig.…”

“…It must be noted that glasses melted under atmospheric conditions reveal two mixed states with the colour of the trivalent manganese is dominant [27]. In the previous study [28], the role of cadmium ions in sodium-zinc-phosphate glass matrix was investigated. The analysis indicated that the glass samples showed successive transparency in both visible and near-IR ranges of spectrum until 2500 nm with relatively high transmission.…”

The Impact of CdO on the Radiation Shielding Properties of Zinc-Sodium-Phosphate Glass Containing Barium

“…Among other oxide glasses (borate, silicate, etc. ), phosphate glasses have many unique advantages such as, ability to retain amorphous, it can handle highconcentration of transition metal ions [21,22], unique chemical and physical structural and compositional capabilities that simplify modification of physical behavior and chemical substance [23]. Therefore, one or more multivalent oxides (ZnO, Al2O3, SnO, PbO, Fe2O3, etc.…”

Characterization and Optical Properties of MnO Doped CuO-Containing Phosphate Glass as Absorption Filters

“…These glasses have evidence of low melting and softening temperatures as well as strong glass forming character. Phosphate-based glasses are well known to exhibit many other interesting properties such as high thermal expansion coefficients, high electrical conductivity, low thermal conductivity and low dispersion; make these glasses more advantageous than other conventional glass formers such as silicate and borate glasses [4][5][6][7]. In addition, the structural versatility of phosphate glasses is of particular interest as it permits the glass network to accommodate a large number of elements so multicomponent glass systems can be easily obtained [8].…”