[1] BAE Syst, POB 868,MER15-1813, Nashua, NH 03061 USA
[2] Lockheed Martin Rotary & Mission Syst, 22121 20th Ave SE, Bothell, WA 98021 USA
[3] US Army Res Lab, Adelphi, MD 20783 USA
[4] Univ Arizona, Coll Opt Sci, 1630 E Univ Blvd, Tucson, AZ 85721 USA
[5] Ruhr Univ Bochum, Photon & Ultrafast Laser Sci, Univ Str 150, D-44801 Bochum, Germany
[6] Univ Caen, Ctr Rech Ions Mat & Photon CIMAP, UMR 6252, CEA,CNRS,ENSICAEN, 6 Blvd Marechal Juin, F-14050 Caen 4, France