[1] IMRA Amer Inc, Ann Arbor, MI 48105 USA
[2] Max Planck Inst Sci Light, D-91058 Erlangen, Germany
[3] Inst Photon Technol, D-07745 Jena, Germany
[4] Australian Natl Univ, Res Sch Phys & Engn, Opt Sci Grp, Canberra, ACT 0200, Australia
[5] Univ Lille 1, CNRS, Lab PhLAM, UMR8523, F-59658 Villeneuve Dascq, France
[6] Univ Rennes 1, Sci Chim Rennes, F-35042 Rennes, France
[7] Stanford Univ, EL Ginzton Lab, Stanford, CA 94305 USA
[8] Univ Cent Florida, CREOL, Coll Opt & Photon, Orlando, FL 32816 USA
[9] BAE Syst, Nashua, NH 03063 USA
[10] DESY, D-22607 Hamburg, Germany