Affiliation: | 1. Institute of Physics , Academy of Sciences of the Czech Republic , Na Slovance 2, 18221 Praha 8, Czech Republic;2. Institute of Mechatronics and Computer Engineering , Technical University of Liberec , 46117 Liberec , Czech Republic marton@fzu.cz;4. Institute of Physics , Academy of Sciences of the Czech Republic , Na Slovance 2, 18221 Praha 8, Czech Republic |