1. Center for Optical Materials Science and Engineering Technologies (COMSET), Clemson University, Clemson, South Carolina 29634, United States
2. School of Materials Science and Engineering, Clemson University, Clemson, South Carolina 29634, United States
3. Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
4. Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634, United States