Effects of focus lens position on pulsed laser deposition of ZnO filmsM. Liu, G. Sun, Z. G. Zhang, X. Q. Wei, C. S. Chen, C. S. Xue and B. Y. ManEur. Phys. J. Appl. Phys., 34 2 (2006) 73-76DOI: https://doi.org/10.1051/epjap:2006046