A single crystal of 1-(4-Nitrophenyl) pyrrolidine was grown by slow evaporation solution growth technique. The estimations of third order non-linear optical properties like non-linear absorption coefficient (β), non-linear refractive index (n2) and susceptibility [χ (3)] have calculated using Z-scan technique and these results indicate that the crystal exhibits saturation absorption and self-defocusing performance. The laser damage threshold of the crystal was 2.18 GW/cm-2 has been measured by irradiating the (001) crystal plane using a Qswitched Nd: YAG laser.