We have demonstrated a novel technique for Au-nano-particle production in a polymer thin film based on the pico-second ultraviolet laser deposition. The Au-nano-particles produced by this technique were finely controlled without aggregation and the average size was similar to20 nm. We also investigated holographic grating formation in the polymer film by pico-second ultra-violet laser deposition technique. (C) 2004 Elsevier B.V. All rights reserved.