1. Qingdao University, College of Physics Science, 308 Ningxia Road, Qingdao 266071, ChinabQingdao University, Key Laboratory of Photonics Materials and Technology in Universities of Shandong, 308 Ningxia Road, Qingdao 266071, China
2. Taishan Medical University, Department of Chemical Engineering, 619 Changcheng Road, Taian 271016, ChinadHamline University, Department of Physics, 1536 Hewitt Avenue Saint Paul, Minnesota 55104, United States