We report in this work, Single crystals of Ammonium adipate were grown by the solution growth method using deionized water as a solvent. Crystal up to the size of 1.5 ´ 0.9 ´ 1.9 cm3 was grown for optical characterization. Optical quality of crystal was observed to be good. The grown crystals were characterized by Xray diffraction methods. The nonlinear refractive index 2 n and susceptibility (3) c have been measured through the Z-scan technique. Ammonium adipate exhibits saturation absorption and self-focusing performance. Nonlinear absorption co-efficient b is determined as 9.5721´10-6 cm /W . Non-linear refractive index 2 n measured at the wavelength of 632.8nm is calculated as 6.8463 ´ 10-8 cm2 /W .The real and imaginary parts of (3) c have been measured at 632.8 nm and were found to be 4.6687 ´ 10-6 esu and 3.4875 ´ 10-7 esu respectively. Also, the absolute value of the third order Non-linear optical susceptibility (3) c is 4.6817 ´ 10-6 esu .
