1. Department of PhysicsUniversity of North Florida Jacksonville Florida USA
2. Department of PhysicsIndiana University of Pennsylvania Indiana Pennsylvania USA
3. Graduate Institute of Electronics Engineering and Department of Electrical EngineeringNational Taiwan University Taipei Taiwan, R.O.C.
4. Laboratory of Optoelectronic Materials and Detection Technology, Guangxi Key Laboratory for the Relativistic Astrophysics, School of Physical Science and TechnologyGuangxi University Nanning China