1. Univ. Bordeaux, CNRS Bordeaux INP ICMCB UMR 5026 Pessac France
2. Tampere University, Photonics Laboratory Tampere Finland
3. Tampere University Faculty of Medicine and Health Technology Tampere Finland
4. Univ. Bordeaux, CNRS, PLACAMAT, UMS 3626 Pessac France
5. Université de Limoges, XLIM, UMR CNRS 7252 Limoges France