A system is reported for evaporation-controlled crystal growth of potassium dihydrogen phosphate (KDP) from
aqueous solution by the Sankaranarayanan−Ramasamy (SR) method. KDP (KH2PO4) single crystals of 10-, 20-, and 40-mm diameter
and 60-mm height have been grown at an average growth rate of 5 mm/day from the point seed in a glass crystallizer. The growth
rate formula is derived for the SR method. The grown crystals were characterized by UV−vis, laser Raman, second harmonic
generation efficiency, and laser damage threshold studies. The SR method is an efficient method to grow crystals of good optical
quality.