1. Atomic Molecular and Optical Physics Research Group, Advanced Institute of Materials Science, Ton Duc Thang University, Ho Chi Minh City 756600, Vietnam
2. Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 756600, Vietnam
3. Laboratory of Applied Physics, Advanced Institute of Materials Science, Ton Duc Thang University, Ho Chi Minh City 756600, Vietnam