Investigation on the solubility, crystal growth, optical, laser damage threshold, NLO, photoluminescence and dielectric properties of pure and cadmium (Cd~(2+))-doped lithium sulfate monohydrate single crystals

摘要

Single crystals of pure and cadmium-doped lithium sulphate monohydrate (LSMH) have been grown fromrnaqueous solution by slow evaporation solution growth technique. The effect of metallic incorporationrn(Cd~(2+)) on the crystal growth and characteristic properties of LSMH single crystal was studied. Therngrown crystals are subjected to powder X-ray diffraction studies to explore the structural propertiesrnof the pure and doped crystals. The dopant concentration of the crystal is estimated by inductivelyrncoupled plasma-optical emission spectroscopy. The crystal showed a 20% transmission enhancementrnon doping with Cd. Photoluminescence studies showed a violet fluorescence emission peak at 395rnnm. The photoluminescence intensity of Cd-doped LSMH increased significantly to about 1.5 timesrnthat of pure LSMH. Laser damage threshold value and second-harmonic conversion efficiency of therngrown crystals has been determined using Nd:YAG laser operating at 532 and 1064 nm, respectively.rnThe multiple shot surface laser damage thresholds for pure and Cd-doped LSMH are found to bern6.9 GW/cm2 and 8.6 GW/cm2, respectively. Low dielectric loss and high dielectric constant shows thatrnthe grown crystal contains minimum defects.