Abstract
Optical quality inorganic crystals have emerged as a vital aspect for designing photonic devices hence in current investigation bulk size single crystal of potassium aluminium sulphate (KAS) has been grown by slow solvent evaporation technique. The crystalline phase of KAS crystal has been determined by means of powder X-ray diffraction analysis and its structural parameters have been experimentally determined by single crystal XRD technique. The optical transparency of KAS crystal has been examined within the wavelength range of 200-900 nm by employing the UV-vis spectral analysis. The color centered luminescence behavior of KAS crystal has been investigated within visible range of interest. The remarkable capability of KAS crystal to resist laser exposure has been determined using the pulse mode operated 1064 nm Nd:YAG laser. The third order nonlinear optical (TONLO) properties of KAS crystal have been examined at 640 nm and the nature of TONLO refractive index, absorption and susceptibility has been reported.