Institution: | (1) Department of Experimental Physics, Natural Sciences Faculty, Palacky University, av. 17. listopadu 50, 772 07 Olomouc, Czech Republic;(2) Joint Lab. of Optics, Palacky University, av. 17. listopadu 50, 772 07 Olomouc, Czech Republic;(3) Institute of Physics, Acad. Sci. CR, av. 17. listopadu 50, 772 07 Olomouc, Czech Republic |