[1] Tampere Univ Technol, Opt Lab, FI-33101 Tampere, Finland
[2] Univ Bourgogne, CNRS, UMR 5209, Lab Interdisciplinaire Carnot Bourgogne, F-21078 Dijon, France
[3] Australian Natl Univ, Res Sch Phys & Engn, Canberra, ACT 0200, Australia
[4] Univ Franche Comte, CNRS, UMR 6174, Inst FEMTO ST, F-25030 Besancon, France