1. IES (UMR 5214), Université de Montpellier, CNRS,Montpellier,France
2. L2C (UMR 5221), Université de Montpellier, CNRS,Montpellier,France
3. Nanotechnology Group, USAL-Nanolab, Universidad de Salamanca,Salamanca,Spain,37008
4. CENTERA Laboratories, Institute of High-Pressure Physics, Polish Academy of Sciences, 29/37 Sokołowska Str,Warsaw,Poland
5. Terahertz Centre, University of Regensburg,Regensburg,Germany,93040
6. Faculty of Electronics, Photonics and Microsystems, Wroclaw University of Science and Technology,Wroclaw,Poland,50-372
7. Chalmers University of Technology,Department of Microtechnology and Nanoscience,Göteborg,Sweden,SE-412 96