1. Optical Sciences Division; Code 5600, U.S. Naval Research Laboratory; Washington DC 20375 USA
2. Sotera Defense Solutions; Annapolis Junction MD, 20701 USA
3. Center for Bio/Molecular Science and Engineering; Code 6900, U.S. Naval Research Laboratory; Washington DC 20375 USA
4. Laboratoire Physique et Etude des Matériaux; ESPCI-CNRS-UPMC UMR8213; 10 rue Vauquelin 75005 Paris France
5. Institut des Sciences Moléculaires d'Orsay (ISMO); CNRS : UMR8214 - Université Paris XI - Paris Sud; Batiment 210 F-91405 Orsay France
6. Multifunctional Materials; Code 6351, U.S. Naval Research Laboratory; Washington DC 20375 USA