1. NanoScience Technology Center and Department of Physics, University of Central Florida, Orlando, Florida 32826, United States
2. Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
3. U.S. Army Combat Capabilities Development Command Soldier-Center, Natick, Massachusetts 01760, United States
4. College of Optics and Photonics, University of Central Florida, Orlando, Florida 32826, United States