| Institution: | 1. Department of Applied Mathematics and Theoretical Physics, Center for Research and Education in Optical Sciences and Applications, Delaware State University, Dover, DE 19901-2277, USA;2. Department of Physics and Pre-Engineering, Delaware State University, Dover, DE 19901-2277, USA;3. Department of Applied Physics, Birla Institute of Technology, Mesra, Ranchi 835 215, India;1. Department of Basic, Shijiazhuang Post and Telecommunication Technical College, Shijiazhuang 050021, PR China;2. Department of Mathematics and Physics, Shijiazhuang Tiedao University, Shijiazhuang 050043, PR China |
