Institution: | (1) Ultrafast Laser and Spectroscopy Laboratory, Department of Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands (Fax: +31-50-3634441, E-mail: D.A.Wiersma@chem.rug.nl), NL;(2) Research Institute for Solid State Physics, P.O. Box 49, H-1525 Budapest, Hungary (E-mail: rsz@power.szfki.kfki.hu), HU |