1. CREOL, College of Optics and Photonics, University of Central Florida, Orlando, Florida 32816, United States
2. US Army Research Laboratory, Adelphi, Maryland 20783, United States
3. Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
4. Institute of Physics NASU, Prospect Nauki, 46, Kyiv-28 03028, Ukraine