1. Department of Electrical Engineering, Vanderbilt University, 2400 Highland Avenue, Nashville, Tennessee 37212, United States
2. Electro-Optic Technology Division, Naval Surface Warfare Center, Crane, Indiana 47522, United States
3. US Naval Research Laboratory, 4555 Overlook Avenue, S.W., Washington, D.C. 20375, United States
4. I. Institute of Physics (IA), RWTH Aachen, 52074 Aachen, Germany
5. Department of Mechanical Engineering, Vanderbilt University, 2400 Highland Avenue, Nashville, Tennessee 37212, United States
6. Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario L8S 4L8, Canada
7. Canadian Centre for Electron Microscopy, McMaster University, Hamilton, Ontario L8S 4L8, Canada