Low-frequency optical dielectric response and rigidity transitions in network glasses

Light structured deposition (1): Material properties

“…Low-load deformation cycles measured from Berkovich indentations on the surface of a representative As 40 S 60 alloy obtained by the laser structured deposition method with concurrent irradiation during its growth (a) and the same alloy prepared using the same cw laser but with non-concurrent irradiation (b). structural landscape in these materials with Arsenic atoms wellhomogeneously distributed in the glass network, with reduced correlations between the building blocks which they belong to [13]. Nevertheless, more research is needed to be conclusive about this hypothesis.…”

Refractive-index dispersion of glassy semiconductors in the pseudo-binary As2Se3–SbSI system

“…Besides, the replacement of As with Sb and the appearance of the structural motif SbSI leads to the changes, more exactly elongation, of chemical bonds involved in the material, and this also influences the oscillator resonance energy E o (1L Às , s varying in the 2 < s < 3 range), which has been pointed out in the analysis of glasses from the system As-S(Se) [9]. As can be seen from Fig.…”

“…Hence its application is partly limited to the region of the material transparency. Also, in some cases, due to the lattice contribution to the dielectric response, a deviation can be observed at low photon frequencies [9]. The graph (n 2 À 1) À1 versus ð hxÞ 2 represents a linear dependence (Fig.…”

Light structured deposition (2): Material optical functionality

“…The optical performance of this particular sample reports an onset for the focal length at f 0 % 5.50 cm, a lateral resolution of about Dw = 35 lm, and a focal segment Df = 0.75 cm long. Theoretical values for these parameters have been derived from the theory commented above, considering a value for the refractive index of the As 20 S 80 alloy at 532 nm of n = 2.6, which is consistent with the values reported for this alloy prepared by different glass-forming techniques [11].…”