LAUSR

Abstract The effect of S b a t % on structural and linear/nonlinear optical properties was studied theoretically and experimentally for S e 85 − x T e 15 S b x ( x = 10 , 12.5 a n d 15 a t % ) glasses. The structural characterization was examined using EDX, XRD, DTA and FTIR. The calculated mean coordination number N C N , average constraints number N s , overall mean bond energy E b and average heat of atomization H S increase with S b a t % , which reflects an increase in the system rigidity and correlated to the increase in crosslinking with Sb at%. The linear/nonlinear optical constants such as optical energy gap E g , Urbach's energy E e , linear refractive index n , nonlinear refractive index n 2 , the third order susceptibility χ ( 3 ) and the electronic polarizability α p are all evaluated and discussed for the studied films. The dispersion parameters were analyzed using Wemple-DiDomenico model of single oscillator model and the optical/electrical/thermal conductivities and electronic properties were deduced. The optical energy gap E g , optical conductivities σ o p t and single oscillator energy E o decreased while the Urbach's energy E e and the refractive index n increased with S b a t % . Assessment of linear/nonlinear and other optical and physical parameters shows that S e 70 T e 15 S b 15 could be a candidate for several photonic applications.