1. School of Materials Science and Engineering/COMSET; Clemson University; Clemson; South Carolina; 29634
2. Laboratoire des Proprietes Optiques des Materiaux et Applications; FRE CNRS 2988; Universite d'Angers 2; Boulevard Lavoisier; 49045; Angers Cedex 01; France
3. College of Optics; Center for Research and Education in Optics and Lasers (CREOL); University of Central Florida; Orlando; Florida; 32816