Abstract Glasses from two varieties of (LiF-B 2 O 3 ) and (LiF-P 5 systems with equal 50 mol % for each partner together samples doped 1 or 2% Bi were synthesized by melting–annealing mechanism. Multiple optical, FTIR photoluminescence spectral measurements carried out. Optical spectra —doped glasses exhibit UV-near visible peaks owing to the specific absorption 3+ ions. elucidate presence char...

Germanium- and tellurium-based glasses have been largely studied due to their recognized potential for photonics. In this paper, we review our recent studies that include the investigation of the Stokes and anti-Stokes photoluminescence (PL) in different glass systems containing metallic and semiconductor nanoparticles (NPs). In the case of the samples with metallic NPs, the enhanced PL was att...

Optical straight waveguides are inscribed in GeGaS and GeGaSSb glasses using a high repetition-rate sub-picosecond laser. The mechanical properties of the glasses in the inscribed regions, which have undergone photo induced changes, have been evaluated by using the nanoindentation technique. Results show that the hardness and elastic modulus of the photo-modified glasses are significantly lower...

ABSTRACT. Linear, nonlinear optical properties, photon buildup factors, and neutron shielding capability of glasses with chemical composition (65-x)B2O3-10Sb2O3-25Li2O-xBi2O3, where x = 0 (BSLB0) – 20 (BSLB20) mol% steps 4 were examined. Molar refractivity (Rmolar) molar polarizability (αmolar) increased as Bi2O3 content increase in the examined BSLB-glasses. The values metallization criterion ...

The indentation deformation and cracking responses of ion-exchanged glasses were measured using quasi-static and dynamic loading cycles. Two glass types were compared, a normal glass that deforms to a large extent by a shearing mechanism and a damage-resistant glass that comparatively deforms with less shear and more densification. The quasi-static indentation cracking threshold for median/radi...

An optical metrology laboratory has been developed to characterize the optical properties of optical window materials to be used for aerospace applications. Several optical measurement systems have been selected and developed to measure spectral transmittance, haze, clarity, birefringence, striae, wavefront quality, and wedge. In addition to silica based glasses, several optical lightweight pol...

Rare earth-doped glasses are of great interest for their optical and fluorescence properties. However, phononmediated non-radiative transitions are a major obstacle to their use and the quantum efficiencies are sensitive to the environment of the rare earth ion. Recently, complex glasses containing fluorides have been developed in which fluoride crystallites can be made to form with a high solu...

Transparent 0.1ErF3–0.1YbF3–5LaF3–94.8SiO2 (mol%) glass-ceramics was prepared by sol–gel method. Efficient upconversion emissions at 379, 407, 450, 490, 520, 540 and 660 nm were observed under 973 nm excitation. The signal at 379 nm is only 4.5 times weaker than the signal at 520 nm, that is readily visible by the naked eyes even with a pump power of 27 mW, indicating that this sample is a very...

GeSbS ridge waveguides have recently been demonstrated as a promising mid - infrared platform for integrated waveguide - based chemical sensing and photodetection. To date, their nonlinear optical properties remain relatively unexplored. In this paper, we characterize the nonlinear optical properties of GeSbS glasses, and show negligible nonlinear losses at 1.55 μm. Using self - phase modulatio...

In this work we present a comprehensive study of the spectroscopic and thermo-optical properties of a set of samples with composition xNd(2)O(3)-(5-x)Y(2)O(3-)40CaO-55B(2)O(3) (0 ≤ x ≤ 1.0 mol%). Their fluorescence quantum efficiency (η) values were determined using the thermal lens technique and the dependence on the ionic concentration was analyzed in terms of energy transfer processes, based...