A study of silver, chromium, stainless-steel, and indium thin films prepared by subnanosecond laser deposition in vacuum is reported. We compare the laser ablation in vacuum at the weak- and tight-focusing conditions of a Ti:sapphire laser beam and analyze the nanoparticles synthesized in the latter case using absorption spectroscopy, x-ray fluorescence, atomic force microscopy, and scanning electron microscopy. Our results show that the nanoparticle formation can be accomplished using long laser pulses under tight-focusing conditions.
© 2007 Optical Society of America
Original Manuscript: August 23, 2006
Revised Manuscript: October 2, 2006
Manuscript Accepted: October 23, 2006
Published: February 20, 2007
R. A. Ganeev, U. Chakravarty, P. A. Naik, H. Srivastava, C. Mukherjee, M. K. Tiwari, R. V. Nandedkar, and P. D. Gupta, "Pulsed laser deposition of metal films and nanoparticles in vacuum using subnanosecond laser pulses," Appl. Opt. 46, 1205-1210 (2007)