Author Affiliations

D. Albrecht,¹ H. M. Kretschmann,¹ M. Mond,^1,* E. Heumann,¹ G. Huber,¹ S. Kück,¹ V. I. Levchenko,^2,** V. N. Yakimovich,² V. G. Shcherbitsky,³ V. E. Kisel,³ and N. V. Kuleshov^3,***

¹Institutfür Laser-Physik, Universität Hamburg, Jungiusstr. 9a, D-20355 Hamburg, Germany

²Institute of Solid State and Semiconductor Physics, National Academy of Science of Belarus, P. Brouki st 17, Minsk 220072, Belarus, Fax: 375-17-284-08-28

³International Laser Center, Scorina Av. 65, Minsk 220027, Belarus

^*Corresponding author: mond@physnet.uni-hamburg.de

^** levchen@ifftp.bas-net.by

^*** kuleshov@ilc.unibel.by