Affiliation: | (1) DTU Fotonik, Technical University of Denmark, P.O. Box 49, 4000 Roskilde, Denmark;(2) Danfysik A/S, 4040 Jyllinge, Denmark;(3) MedArt A/S, 2650 Hvidovre, Denmark;(4) Department of Physics, Technical University of Denmark, 2800 Lyngby, Denmark |