Excitability of chaotic transients in a semiconductor laser O. V. Ushakov, N. Korneyev, M. Radziunas, H. J. Wünsche and F. Henneberger EPL, 79 3 (2007) 30004 Published online: 17 July 2007 DOI: 10.1209/0295-5075/79/30004