Authors
Qu Yuqiu
College of Physics Science and Technology, Heilongjiang University, Harbin, China
Zhang Liuyang
Department of Optoelectric Information Science and Engineering, Harbin University of Science and Technology, China
An Limin
College of Physics Science and Technology, Heilongjiang University, Harbin, China
Wei Hong
College of Physics Science and Technology, Heilongjiang University, Harbin, China