Investigation on fluorescence, third order non-linear optical and mechanical performance of glycine doped ADP crystal for applications of photonic devices

Abstract

Optically transparent glycine doped ammonium dihydrogen phosphate crystals have been grown from aqueous solution by slow solution evaporation method. Crystallographic data of the grown crystal has been determined using the single crystal X-ray diffraction technique. The photoexcited colour centred fluorescence emission spectrum of the grown crystal has been analysed at an emission wavelength of 254 nm in the range of 300 to 700 nm. Z-scan studies have been performed at 632·8 nm to confirm the negative third order non-linear refraction behaviour of the grown crystal. The non-linear refractive index (n2), non-linear absorption coefficient (β) and third order non-linearity susceptibility (χ3) of the grown crystal were calculated using the Z-scan data to explore the material suitability for photonic applications. Vicker's microhardness test was carried out to analyse the mechanical stability and determine the hardness parameters of the grown crystal.