1. CENTERA Laboratories, Institute of High Pressure Physics Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warsaw, Poland
2. Centre for Advanced Materials and Technologies (CEZAMAT), Warsaw University of Technology, Poleczki 19, 02-822 Warsaw, Poland
3. Institute of Optoelectronics, Military University of Technology, gen. S. Kaliskiego 2, 00-908 Warsaw, Poland
4. Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland
5. Faculty of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland
6. KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden