Lithium tantalate crystal is widely used in optical devices, infrared detectors and surface acoustic wave devices because of its excellent piezoelectric, acousto-optic nonlinear properties. The Li content near stoichiometric lithium (NSLT) higher than that congruent (CLT) crystal. Therefore, the performance NSLT better CLT some aspects. This article reviews physical properties, preparation meth...

It is well accepted that uncertainties still persist regarding the quantitative contribution of ice clouds to the radiative balance of the Earth [1]. Techniques for modelling the interaction of light with ice crystals found in these clouds have helped reduce this uncertainty; however techniques such as the discrete dipole approximation (DDA) [2] and T-matrix [3] are computationally expensive fo...

a comprehensive study on the structural, electronic and nonlinear optical (nlo) properties of alumina nanostructures (al2o3)n with n = 2-5 belonging to the groups iii and vi dopants carried out by density functional theory. the nbo charges exhibit dopant atoms caused to the increasing charge transfer and introduces acceptor-donor model for nlo response of alumina nanostructures. under the influ...