1. Institute of Physics v. v. i., Czech Academy of Sciences, Na Slovance 2, 182 21 Prague 8, Czech Republic
2. Joint Laboratory of Optics, Palacký University, Av. 17. listopadu 50A, 772 07 Olomouc, Czech Republic
3. SVCS Process Innovation Ltd., Optátova 37, 637 00 Brno, Czech Republic