Ammonium Dihydrogen Phosphate (ADP) is a pioneer Nonlinear Optical (NLO) crystal. It is widely used in a Laser Technology and Optoelectronics. The pure and various amino acids like L-threonine, L-serine and L-phenylalanine doped ADP crystals are grown using the slow solvent evaporation technique at room temperature. The powder XRD study shows the single phasic body centred tetragonal structure of all the grown crystals. The FT-IR spectroscopy confirmed...