1. Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433, USA
2. Azimuth Corporation, 2970 Presidential Dr #200, Fairborn, OH 45324, USA
3. Physics Faculty, Taras Shevchenko National University of Kyiv, 64 Volodymyrs'ka Street, Kyiv 01601, Ukraine
4. School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK