1. Delaware State University, Optical Science Center for Applied Research, 1200 North DuPont Highway, Dover, Delaware 19901, United StatesbDelaware State University, Department of Physics and Engineering, 1200 North DuPont Highway, Dover, Delaware 19901, Uni
2. Delaware State University, Department of Physics and Engineering, 1200 North DuPont Highway, Dover, Delaware 19901, United States