1. Faculty of Physics, University of Education, Hue University, Hue, 530000, Vietnam
2. Nguyen Hue University, Dong Nai Province, Vietnam
3. Atomic Molecular and Optical Physics Research Group, Institute for Advanced Study in Technology, Ton Duc Thang University, Ho Chi Minh City, Vietnam
4. Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam